Perkins, J., Ridenhour, A., & Kovsky, M. (2009). Attack proof: The ultimate guide to personal protection (2nd ed.). Human Kinetics.
Cita Chicago Style (17a ed.)Perkins, John, Al Ridenhour, y Matt Kovsky. Attack Proof: The Ultimate Guide to Personal Protection. 2nd ed. Champaign, Ill.: Human Kinetics, 2009.
Cita MLA (8a ed.)Perkins, John, et al. Attack Proof: The Ultimate Guide to Personal Protection. 2nd ed. Human Kinetics, 2009.
Precaución: Estas citas no son 100% exactas.