APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.