[en] Research Methods in Criminal Justice and Criminology Allyn & Bacon
[en] The Logic Of Causal Order Sage Publications
[en] An Introduction to Support Vector Machines and Other Kernel-Based Learning Methods Cambridge University Press
[en] R in a Nutshell O'Reilly Media
[en] Identification Problems in the Social Sciences HarvardUP
[en] Feynman Lectures Simplified 4A · Math for Physicists Real Science Publishing