Cita APA (7a ed.)

Keppel, R. D., & Birnes, W. J. (2003). The psychology of serial killer investigations: The grisly business unit. Academic Press.

Cita Chicago Style (17a ed.)

Keppel, Robert D., y William J. Birnes. The Psychology of Serial Killer Investigations: The Grisly Business Unit. Amsterdam Heidelberg [u.a.]: Academic Press, 2003.

Cita MLA (9a ed.)

Keppel, Robert D., y William J. Birnes. The Psychology of Serial Killer Investigations: The Grisly Business Unit. Academic Press, 2003.