APA-referens (7:e uppl.)

Poyer, D. (2007). The threat. St. Martin's Press.

Chicago-referens (17:e uppl.)

Poyer, David. The Threat. New York: St. Martin's Press, 2007.

MLA-referens (9:e uppl.)

Poyer, David. The Threat. St. Martin's Press, 2007.