APA-referens (7:e uppl.)

Stahl, B. J. (1973). Vertebrate history: Problems in evolution. McGraw-Hill.

Chicago-referens (17:e uppl.)

Stahl, Barbara J. Vertebrate History: Problems in Evolution. New York: McGraw-Hill, 1973.

MLA-referens (9:e uppl.)

Stahl, Barbara J. Vertebrate History: Problems in Evolution. McGraw-Hill, 1973.