[en] [Gutenberg 18603] • What Social Classes Owe to Each Other Createspace Independent Publishing Platform
[en] [Gutenberg 45913] • Of Vulgarity Createspace Independent Publishing Platform
[es] [Gutenberg 22899] • Ariel Linkgua
[en] [Gutenberg 12096] • Bushido, the Soul of Japan Kodansha International Ltd
[en] Driven · How Human Nature Shapes Our Choices Jossey-Bass
[en] [Gutenberg 7892] • Heart and Science: A Story of the Present Time Broadview Press Inc
[en] Desire and Deceit · The Real Cost of the New Sexual Tolerance Multnomah Books
[es] En defensa de los derechos de los animales Fondo de Cultura Económica
[es] Ética y política Fondo de Cultura Economica USA
[en] The Essential Writings of Machiavelli Modern Library