Abram, David. The Spell of the Sensuous: Perception and Language in a More-Than-Human World. New York: Vintage, 1997.
Albera, Dionigi, and John Eade, eds. International Perspectives on Pilgrimage Studies: Itineraries, Gaps and Obstacles. New York: Routledge, 2015.
Anderson, William, and Clive Hicks. Green Man: The Archetype of Our Oneness with the Earth. London: HarperCollins, 1990.
Anselm. Proslogion. In Anselm of Canterbury: The Major Works, edited by Brian Davies and G.R. Evans. Oxford: Oxford University Press, 2008.
Aquinas, Thomas. Compendium of Theology. Translated by Richard J. Regan. Oxford: Oxford University Press, 2009.
Batchelor, Stephen. Secular Buddhism: Imagining the Dharma in an Uncertain World. New Haven, CT: Yale University Press, 2017.
Bellah, Robert N. Religion in Human Evolution: From the Paleolithic to the Axial Age. Cambridge, MA: Harvard University Press, 2011.
Benson, Herbert, and Miriam Z. Klipper. The Relaxation Response. New York: HarperTorch, 2000.
Bentley, James. Restless Bones: The Story of Relics. London: Constable, 1985.
Berresford Ellis, Peter. Celtic Inheritance. London: Muller, 1985.
Berman, Morris. The Reenchantment of the World. New York: Bantam, 1984.
Blackmore, Susan. Zen and the Art of Consciousness. London: Oneworld Publications, 2011.
Bono, Giacomo, Robert A. Emmons, and Michael E. McCullough. “Gratitude in Practice and the Practice of Gratitude.” In Positive Psychology in Practice, edited by P. Alex Linley and Stephen Joseph, 464–481. Hoboken: Wiley, 2004.
Bowler, Peter J. Evolution: The History of an Idea. Berkeley: University of California Press, 1984.
Boyles, Kristen L. “Saving Sacred Sites: The 1989 Proposed Amendment to the American Indian Religious Freedom Act.” Cornell Law Review 76, no. 5 (July 1991): 1117–48.
Braithwaite, R.B. Scientific Explanation: A Study of the Function of Theory, Probability and Law in Science. Cambridge: Cambridge University Press, 1953.
Bratman, Gregory N., Gretchen C. Daily, Benjamin J. Levy, and James J. Gross. “The Benefits of Nature Experience: Improved Affect and Cognition.” Landscape and Urban Planning 138 (2015): 41–50.
Bratman, Gregory N., J. Paul Hamilton, Kevin S. Hahn, Gretchen C. Daily, and James J. Gross. “Nature Experience Reduces Rumination and Subgenual Prefrontal Cortex Activation.” Proceedings of the National Academy of Sciences of the United States of America 112, no. 28 (July 2015): 8567–72.
Brown, Peter. The Cult of the Saints: Its Rise and Function in Latin Christianity. Chicago: University of Chicago Press, 2015.
Brown, Steven. “The ‘Musilanguage’ Model of Music Evolution.” In The Origins of Music, edited by Nils L. Wallin, Björn Merker, and Steven Brown, 271–300. Cambridge, MA: MIT Press, 2000.
Brown, Steven. “Evolutionary Models of Music: From Sexual Selection to Group Selection.” In Perspectives in Ethology 13, edited by François Tonneau and Nicholas S. Thompson, 231–81. New York: Plenum, 2004.
Carter, Chris. Science and the Near-Death Experience: How Consciousness Survives Death. Rochester, VT: Inner Traditions, 2010.
Chanda, Mona Lisa, and Daniel J. Levitin. “The Neurochemistry of Music.” Trends in Cognitive Science 17, no. 4 (April 2013): 179–93.
Clift, Stephen, Grenville Hancox, Ian Morrison, Bärbel Hess, Gunter Kreutz, and Don Stewart. “Choral Singing and Psychological Wellbeing: Quantitative and Qualitative Findings from English Choirs in a Cross-National Survey.” Journal of Applied Arts and Health 1, no. 1 (2010): 19–34.
Clift, Stephen, Grenville Hancox, Rosalia Staricoff, and Christine Whitemore. Singing and Health: A Systematic Mapping and Review of Non-Clinical Research. Canterbury: Sidney De Haan Research Centre for Arts and Health, Canterbury Christ Church University, 2008.
Coleman, Simon, and Elsner, John. Pilgrimage Past and Present: Sacred Travel and Sacred Space in the World Religions. London: British Museum Press, 1995.
Corazza, Ornella. Near-Death Experiences: Exploring the Mind-Body Connection. London: Routledge, 2008.
Cox, Brian. “The Large Hadron Collider: A Scientific Creation Story.” In The Atheist’s Guide to Christmas, edited by Ariane Sherine. London: HarperCollins, 2009.
Cross, Ian. “The Nature of Music and Its Evolution.” In The Oxford Handbook of Music Psychology, edited by Susan Hallam, Ian Cross, and Michael Thaut. 2nd ed. Oxford: Oxford University Press, 2016.
Cross, Ian, and Iain Morley. “The Evolution of Music: Theories, Definitions and the Nature of the Evidence.” In Communicative Musicality: Exploring the Basis of Human Companionship, edited by Stephen Malloch and Colwyn Trevarthen, 61–82. Oxford: Oxford University Press, 2008.
Darwin, Charles. The Origin of Species. London: John Murray, 1859.
Darwin, Charles. The Variation of Animals and Plants Under Domestication. 2nd ed. London: John Murray, 1875.
Darwin, Charles. The Origin of Species. 6th ed. London: John Murray, 1882.
Darwin, Charles. The Descent of Man and Selection in Relation to Sex. 2nd ed. London: John Murray, 1885.
Darwin, Erasmus. Zoonomia. 2 vols. 1794–96. Reprinted with preface by Thom Verhave and Paul R. Bindler. New York: AMS Press, 1974.
Davidson, Linda Kay, and David Martin Gitlitz. Pilgrimage: From the Ganges to Graceland, An Encyclopedia. Santa Barbara: ABC-CLIO, 2002.
Davies, J.G. Pilgrimage Yesterday and Today: Why? Where? How? London: SCM Press, 1998.
Dawkins, Richard. The God Delusion. London: Bantam Press, 2006.
Dawkins, Richard. Unweaving the Rainbow: Science, Delusion and the Appetite for Wonder. London: Penguin, 2006.
de Botton, Alain. The Pleasures and Sorrows of Work. London: Hamish Hamilton, 2009.
de Botton, Alain. Religion for Atheists: A Non-Believer’s Guide to the Uses of Religion. London: Hamish Hamilton, 2013.
Deb, Debal. Sacred Groves of West Bengal: A Model of Community Forest Management. Norwich, U.K.: Overseas Development Group, University of East Anglia, 2007.
Dennett, Daniel. Breaking the Spell: Religion as a Natural Phenomenon. New York: Viking, 2006.
Department for Environment, Food and Rural Affairs. The Natural Choice: Securing the Value of Nature. H.M. Government White Paper. London: The Stationery Office, 2011.
Descola, Philippe. Beyond Nature and Culture. Translated by Janet Lloyd. Chicago: University of Chicago Press, 2013.
Duffy, E. The Stripping of the Altars: Traditional Religion in England c.1400–c.1580. New Haven: Yale Univeristy Press, 1992.
Ehrenreich, Barbara. Blood Rites: Origins and History of the Passions of War. New York: Metropolitan Books, 1997.
Ehrenreich, Barbara. Dancing in the Streets: A History of Collective Joy. New York: Metropolitan Books, 2006.
Ehrenreich, Barbara. Smile or Die: How Positive Thinking Fooled America and the World. London: Granta Books, 2009.
Eire, Carlos M.N. War Against the Idols: The Reformation of Worship from Erasmus to Calvin. Cambridge: Cambridge University Press, 1986.
Eliade, Mircea. Patterns in Comparative Religion. Translated by Rosemary Sheed. London: Sheed and Ward, 1958.
Emerson, Ralph Waldo. Selected Essays. Harmondsworth, U.K.: Penguin Books, 1985.
Emmons, Robert A., and Cheryl A. Crumpler. “Gratitude as a Human Strength: Appraising the Evidence.” Journal of Social and Clinical Psychology 19, no. 1 (2000): 56–69.
Emmons, Robert A., and Teresa T. Kneezel. “Giving Thanks: Spiritual and Religious Correlates of Gratitude.” Journal of Psychology and Christianity 24, no. 2 (2005): 140–8.
Emmons, Robert A., and Michael E. McCullough. “Counting Blessings Versus Burdens: An Experimental Investigation of Gratitude and Subjective Well-Being in Daily Life,” Journal of Personality and Social Psychology 84, no. 2 (2003): 377–89.
Evans, Dylan. Placebo: Mind over Matter in Modern Medicine. London: HarperCollins, 2010.
Feldman, Ruth, Mikhail Monakhov, Maayan Pratt, and Richard P. Ebstein. “Oxytocin Pathway Genes: Evolutionary Ancient System Impacting on Human Affiliation, Sociality, and Psychopathology.” Biological Psychiatry 79, no. 3 (February 1, 2016): 174–84.
Field, Clive D. “Secularising Selfhood: What Can Polling Data on the Personal Saliency of Religion Tell Us about the Scale and Chronology of Secularisation in Modern Britain?” Journal of Beliefs and Values 36, no. 3 (2015): 308–30.
Fox, Matthew. Meister Eckhart: A Mystic-Warrior for Our Times. Novato, CA: New World Library, 2014.
Fox, Matthew, and Sheldrake, Rupert. The Physics of Angels: Exploring the Realm Where Science and Spirit Meet. San Francisco: HarperCollins, 1996.
Frazer, James George. Folk-Lore in the Old Testament: Studies in Comparative Religion Legend and Law. London: Macmillan, 1918.
Freud, Sigmund. Moses and Monotheism. London: Hogarth Press and the Institute of Psycho-Analysis, 1939.
Geissmann, Thomas. “Gibbon Songs and Human Music from an Evolutionary Perspective.” In The Origins of Music, edited by Nils L. Wallin, Björn Merker, and Steven Brown, 103–23. Cambridge, MA: MIT Press, 2000.
Gennep, Arnold van. The Rites of Passage. Chicago: Chicago University Press, 1972.
Giblett, Rod. People and Places of Nature and Culture. Bristol: Intellect, 2011.
Gilbert, Natasha. “Green Space: A Natural High.” Nature 531. no. 7594 (March 17, 2016): S56–7.
Godwin, Joscelyn. Music, Mysticism and Magic: A Sourcebook. London: Routledge and Kegan Paul, 1986.
Goyal, Madhav, Sonal Singh, Erica M. S. Sibinga, Neda F. Gould, Anastasia Rowland-Seymour, Ritu Sharma, Zackary Berger, et al. “Meditation Programs for Psychological Stress and Well-Being: A Systematic Review and Meta-analysis.” JAMA Internal Medicine 174, no. 3 (March 2014): 357–68.
Gray, John. Straw Dogs: Thoughts on Humans and Other Animals. London: Granta Books, 2002.
Gray, John. The Immortalization Commission: Science and the Strange Quest to Cheat Death. London: Allen Lane, 2011.
Griffiths, Bede. Return to the Centre. London: Collins, 1976.
Griffiths, Bede. The Marriage of East and West. London: Collins, 1982.
Hardy, Alister. The Spiritual Nature of Man: A Study of Contemporary Religious Experience. Oxford: Clarendon Press, 1979.
Harris, Sam. The End of Faith: Religion, Terror, and the Future of Reason. New York: Norton, 2005.
Harris, Sam. Waking Up: Searching for Spirituality Without Religion. London: Transworld, 2014.
Hart, David Bentley. The Experience of God: Being, Consciousness, Bliss. New Haven, CT: Yale University Press, 2013.
Hayward, Guy. Singing as One: Community in Synchrony. PhD thesis. Cambridge University, 2014.
Heller, Erich. The Disinherited Mind: Essays in Modern German Literature and Thought. Cambridge: Cambridge University Press, 1952.
Hitchens, Christopher. God Is Not Great: How Religion Poisons Everything. New York: Hachette, 2008.
Hölzel, Britta K., Ulrich Ott, Tim Gard, Hannes Hempel, Martin Weygandt, Katrin Morgen, and Dieter Vaitl. “Investigation of Mindfulness Meditation Practitioners with Voxel-Based Morphometry.” Social Cognitive and Affective Neuroscience 3, no. 1 (2008): 55–61.
Hölzel, Britta K., James Carmody, Mark Vangel, Christina Congleton, Sita M. Yerramsetti, Tim Gard, and Sara W. Lazar. “Mindfulness Practice Leads to Increases in Regional Brain Gray Matter Density.” Psychiatry Research 191, no. 1 (January 30, 2011): 36–43.
Howell, Philip. “At Home and Astray.” Cambridge Alumni Magazine 77 (Lent 2016): 28–35.
Irvin, Jim, and Colin McLear, eds. The Mojo Collection: The Ultimate Music Companion. 4th ed. Edinburgh: Canongate Books, 2007.
Karjalainen, Eeva, Tytti Sarjala, and Hannu Raitio. “Promoting Human Health through Forests: Overview and Major Challenges.” Environmental Health and Preventive Medicine 15, no. 1 (January 2010): 1–8.
Khan, Hazrat Inayat. “The Music of the Spheres.” In The Book of Music and Nature: An Anthology of Sounds, Words, and Thoughts, edited by David Rothenberg and Marta Ulvaeus. Middletown, CT: Wesleyan University Press, 2009.
Koenig, Harold G. Medicine, Religion, and Health: Where Science and Spirituality Meet. West Conshohocken, PA: Templeton Press, 2008.
Koenig, Harold G., Michael E. McCullough, and David B. Larson. Handbook of Religion and Health. Oxford: Oxford University Press, 2001.
Koenig, Harold G., Dana E. King, and Verna Benner Carson. Handbook of Religion and Health. 2nd ed. Oxford: Oxford University Press, 2012.
Kuhn, Thomas S. The Structure of Scientific Revolutions. Chicago: University of Chicago Press, 1962.
Kuyken, Willem, Rachel Hayes, Barbara Barrett, Richard Byng, Tim Dalgleish, David Kessler, and Glyn Lewis, et al. “Effectiveness and Cost-Effectiveness of Mindfulness-Based Cognitive Therapy Compared with Maintenance Antidepressant Treatment in the Prevention of Depressive Relapse or Recurrence (PREVENT): A Randomised Controlled Trial.” The Lancet 386, no. 9988 (2015): 63–73.
La Fontaine, J.S. Initiation: Ritual Drama and Secret Knowledge Across the World. Harmondsworth, UK: Penguin, 1985.
Lévi-Strauss, Claude. Structural Anthropology. Harmondsworth, UK: Penguin, 1972.
Levitin, Daniel. This Is Your Brain on Music: Understanding a Human Obsession. London: Atlantic Books, 2006.
Li, Qing. “Effect of Forest Bathing Trips on Human Immune Function.” Environmental Health and Preventive Medicine 15, no. 1 (2010): 9–17.
Lorimer, D. “Science and Religion: A Survey of Spiritual Practices and Beliefs among European Scientists, Engineers and Medical Professionals.” Scientific and Medical Network Review 123 (2017): 23–6.
Louv, Richard. Last Child in the Woods: Saving Our Children from Nature-Deficit Disorder. Chapel Hill, NC: Algonquin Books, 2008.
Lutz, Antoine, Lawrence L. Greischar, Nancy B. Rawlings, Matthieu Ricard, and Richard J. Davidson. “Long-Term Meditators Self-Induce High-Amplitude Gamma Synchrony During Mental Practice.” Proceedings of the National Academy of Sciences 101, no. 46 (November 2004): 16369–73.
McCullough, Michael E., Robert A. Emmons, and Jo-Ann Tsang. “The Grateful Disposition: A Conceptual and Empirical Topography.” Journal of Personality and Social Psychology 82, no. 1 (2002): 112–27.
Marais, Eugène. The Soul of the Ape and the Soul of the White Ant. London: Penguin, 1989.
Mascaro, Juan, trans. The Upanishads. Harmondsworth, UK: Penguin Books, 1965.
Mauss, Marcel. The Gift: The Form and Reason for Exchange in Archaic Societies. Translated by W.D. Halls. New York: Norton, 2000.
Merker, Björn. “Synchronous Chorusing and Human Origins.” In The Origins of Music, edited by Nils L. Wallin, Björn Merker, and Steven Brown, 315–27. Cambridge, MA: MIT Press, 2000.
Michell, John. The Earth Spirit: Its Ways, Shrines and Mysteries. London: Thames and Hudson, 1975.
Morris, P.A. “The Effect of Pilgrimage on Anxiety, Depression and Religious Attitude.” Psychological Medicine 12, no. 2 (May 1982): 291–4.
Nabokov, Peter. Where the Lightning Strikes: The Lives of American Indian Sacred Places. New York: Penguin Books, 2006.
Nagel, Thomas. Mind and Cosmos: Why the Materialist Neo-Darwinian Conception of Nature Is Almost Certainly False. Oxford: Oxford University Press, 2012.
Nilsson, Ulrica. “Soothing Music Can Increase Oxytocin Levels during During Bed Rest after Open-Heart Surgery: A Randomised Control Trial.” Journal of Clinical Nursing 18, no. 15 (2009): 2153–61.
Paffard, Michael. Inglorious Wordsworths: A Study of Some Transcendental Experiences in Childhood and Adolescence. London: Hodder and Stoughton, 1973.
Park, Bum Jin, Yuko Tsunetsugu, Tamami Kasetani, Takahide Kagawa, and Yoshifumi Miyakazi. “The Physiological Effects of Shinrin-yoku (Taking in the Forest Atmosphere or Forest Bathing): Evidence from Field Experiments in 24 Forests across Japan.” Environmental Health and Preventive Medicine 15, no. 1 (2010): 18–26.
Partridge, Eric. Origins: A Short Etymological Dictionary of Modern English. London: Routledge and Kegan Paul, 1966.
Purce, Jill. The Mystic Spiral: Journey of the Soul. London: Thames and Hudson, 1974.
Purce, Jill. “Sound in Mind and Body.” Resurgence 115 (March–April 1986): 26–30.
Reynolds, Gretchen. “How Walking in Nature Changes the Brain.” New York Times, July 22, 2015.
Rosenthal, Joshua Z., Sarina Grosswald, Richard Ross, and Norman Rosenthal. “Effects of Transcendental Meditation in Veterans of Operation Enduring Freedom and Operation Iraqi Freedom with Post-Traumatic Stress Disorder: A Pilot Study.” Military Medicine 176, no. 6 (June 2011): 626–30.
Roszak, Theodore. Where the Wasteland Ends: Politics and Transcendence in Post-Industrial Society. London: Faber and Faber, 1973.
Sacks, Oliver. Musicophilia: Tales of Music and the Brain. London: Picador, 2007.
Sacks, Oliver. Gratitude. London: Picador, 2015.
Schwartz, Stephen A. “Meditation—The Controlled Psychophysical Self-Regulation Process that Works.” Explore: The Journal of Science and Healing 7, no. 6 (2011): 348–53.
Schweiker, William. “Torture and Religious Practice.” Dialog: A Journal of Theology 47, no. 3 (Fall 2008): 208–16.
Scott, Chris J., R.G. Harrison, M.J. Owens, M. Lockwood, and L.Barnard. “Evidence for Solar Wind Modulation of Lightning.” Environmental Research Letters 9, no. 5 (May 15, 2014).
Seligman, Martin E.P., Tracy A. Steen, Nansook Park, and Christopher Peterson. “Positive Psychology Progress: Empirical Validation of Interventions.” American Psychologist 60, no. 5 (2005): 410–21.
Sheldrake, Rupert. Dogs That Know When Their Owners Are Coming Home, and Other Unexplained Powers of Animals. London: Hutchinson, 1999.
Sheldrake, Rupert. A New Science of Life: The Hypothesis of Formative Causation. London: Blond and Briggs, 1981.
Sheldrake, Rupert. A New Science of Life: The Hypothesis of Formative Causation. 3rd ed. London: Icon Books, 2009.
Sheldrake, Rupert. The Presence of the Past: Morphic Resonance and the Habits of Nature. London: Collins, 1988.
Sheldrake, Rupert. The Presence of the Past: Morphic Resonance and the Habits of Nature. 2nd ed. London: Icon Books, 2011.
Sheldrake, Rupert. The Rebirth of Nature: The Greening of Science and God. London: Century, 1992.
Sheldrake, Rupert. The Science Delusion: Freeing the Spirit of Enquiry. London: Coronet, 2012. Published in the U.S. as Science Set Free: 10 Paths to New Discovery. New York: Random House, 2012.
Sheldrake, Rupert. The Sense of Being Stared At, and Other Aspects of the Extended Mind. London: Hutchinson, 2003.
Sheldrake, Rupert. Seven Experiments That Could Change the World: A Do-It-Yourself Guide to Revolutionary Science. 2nd ed. Rochester, VT: Park Street Press, 2002.
Sheldrake, Rupert. and Fox, Matthew. Natural Grace: Dialogues on Science and Spirituality. London: Bloomsbury, 1996.
Sheldrake, Rupert, Terence McKenna, and Ralph Abraham. The Evolutionary Mind: Trialogues at the Edge of the Unthinkable. Santa Cruz, CA: Trialogue Press, 1998. New edition, Rhinebeck, NY: Monkfish Books, 2005.
Sheldrake, Rupert, Terence McKenna, and Ralph Abraham. Chaos, Creativity, and Cosmic Consciousness. Rochester, VT: Park Street Press, 2001.
Sheldrake, Rupert, and Pamela Smart. “Videotaped Experiments on Telephone Telepathy.” Journal of Parapsychology 67, no. 1 (2003): 147–166.
Smith, James K.A. How (Not) to Be Secular: Reading Charles Taylor. Grand Rapids, MI: Eerdmans, 2014.
Spencer, Nick. Atheists: The Origin of the Species. London: Bloomsbury, 2014.
Steindl-Rast, David. Gratefulness, the Heart of Prayer: An Apporach to Life in Fullness. Mahwah, NJ: Paulist Press, 1984.
Strawson, Galen. “Realistic Monism: Why Physicalism Entails Panpsychism.” Journal of Consciousness Studies 13, no. 10–11 (2006): 3–31.
Taylor, Charles. A Secular Age. Cambridge, MA: Harvard University Press, 2007.
Taylor, Eugene. Introduction. In Michael Murphy, Steven Donovan, and Eugene Taylor, The Physical and Psychological Effects of Meditation: A Review of Contemporary Research with a Comprehensive Bibliography, 1931–1996. Sausalito, CA: Institute of Noetic Sciences, 1997.
Theos. The Spirit of Things Unseen: Belief in Post-Religious Britain. London: Theos, 2013.
Thomas, Keith. Man and the Natural World: Changing Attitudes in England 1500–1800. Harmondsworth, UK: Penguin Books, 1984.
Titze, Ingo R., “The Human Instrument.” Scientific American 298, no. 1 (January 2008): 94–101.
Tolkien, J.R.R. The Silmarillion. London: HarperCollins, 2013.
Tomlinson, Gary. A Million Years of Music: The Emergence of Human Modernity. New York: Zone Books, 2015.
The Vatican. Catechism of the Catholic Church. London: Burns and Oates, 1999.
van Lommel, Pim. Consciousness Beyond Life: The Science of the Near-Death Experience. London: HarperOne, 2011.
Vella-Burrows, Trish. “Singing and People with Dementia.” In Singing, Wellbeing and Health: Context, Evidence and Practice, edited by Stephen Clift. Canterbury: Sidney De Haan Research Centre for Arts and Health, Canterbury Christ Church University, 2012.
Vitebsky, Piers. The Reindeer People: Living with Animals and Spirits in Siberia. London: Harper Perennial, 2011.
Viveiros de Castro, Eduardo Batalha. “Exchanging Perspectives: The Transformation of Objects into Subjects in Amerindian Ontologies.” Common Knowledge 10, no. 3 (Fall 2004): 463–84.
Watkins, Philip C., Michael Van Gelder, and Araceli Frias. “Furthering the Science of Gratitude.” In The Oxford Handbook of Positive Psychology, edited by Shane J. Lopez and C.R. Snyder. 2nd ed. New York: Oxford University Press, 2009.
Wax, Ruby. A Mindfulness Guide for the Frazzled. London: Penguin, 2016.
Williams, Dennis C. God’s Wilds: John Muir’s Vision of Nature. College Station, TX: Texas A&M University Press, 2002.
Wilson, Edward O. Biophilia. Cambridge, MA: Harvard University Press, 1984.
Woodard, G.D., and W.C. McCrone, “Unusual Crystallization Behavior.” Journal of Applied Crystallography 8 (1975): 342.
Woodhead, Linda, and Rebecca Catto, eds. Religion and Change in Modern Britain. London: Routledge, 2012.
Wroe, Ann. Being Shelley: The Poet’s Search for Himself. London: Vintage, 2007.
Young, Jon, Evan McGown, and Ellen Haas. Coyote’s Guide to Connecting with Nature. Shelton, WA: Owlink Media, 2010.
Zivotofsky, Ari Z., Leor Gruendlinger, and Jeffrey M. Hausdorff. “Modality-Specific Communication Enabling Gait Synchronization during Over-Ground Side-by-Side Walking.” Human Movement Science 31, no. 5 (2012): 1268–85.
Zuckerman, Phil. “Atheism: Contemporary Numbers and Patterns.” In The Cambridge Companion to Atheism, edited by Michael Martin, 47–66. Cambridge: Cambridge University Press, 2007.