Cita APA (7a ed.)

Keppel, R. D., & Birnes, W. J. (2009). Serial violence: Analysis of modus operandi and signature characteristics of killers. CRC Press.

Cita Chicago Style (17a ed.)

Keppel, Robert D., y William J. Birnes. Serial Violence: Analysis of Modus Operandi and Signature Characteristics of Killers. Boca Raton [u.a.]: CRC Press, 2009.

Cita MLA (8a ed.)

Keppel, Robert D., y William J. Birnes. Serial Violence: Analysis of Modus Operandi and Signature Characteristics of Killers. CRC Press, 2009.