Cita APA (7a ed.)

Perkins, J., Ridenhour, A., & Kovsky, M. (2000). Attack proof: The ultimate guide to personal protection. Human Kinetics.

Cita Chicago Style (17a ed.)

Perkins, John, Al Ridenhour, y Matt Kovsky. Attack Proof: The Ultimate Guide to Personal Protection. Champaign, Ill. [u.a.]: Human Kinetics, 2000.

Cita MLA (9a ed.)

Perkins, John, et al. Attack Proof: The Ultimate Guide to Personal Protection. Human Kinetics, 2000.