APA-referens (7:e uppl.)

Wilkins, J. S. (2009). Defining species: A sourcebook from antiquity to today. P. Lang.

Chicago-referens (17:e uppl.)

Wilkins, John S. Defining Species: A Sourcebook from Antiquity to Today. New York: P. Lang, 2009.

MLA-referens (9:e uppl.)

Wilkins, John S. Defining Species: A Sourcebook from Antiquity to Today. P. Lang, 2009.