APA Edition Citation

Perkins, J., Kovsky, M., & Ridenhour, A. (2009). Attack proof: The ultimate guide to personal protection (2.). Human Kinetics.

Chicago Edition Citation

Perkins, John, Matt Kovsky, and Al Ridenhour. Attack Proof: The Ultimate Guide to Personal Protection. 2. Usa: Human Kinetics, 2009.

MLA Edition Citation

Perkins, John, et al. Attack Proof: The Ultimate Guide to Personal Protection. 2. Human Kinetics, 2009.