APA-referens (7:e uppl.)

Headstrom, R. (1972). Frogs, toads and salamander as pets. Ives Washburn.

Chicago-referens (17:e uppl.)

Headstrom, Richard. Frogs, Toads and Salamander as Pets. New York: Ives Washburn, 1972.

MLA-referens (9:e uppl.)

Headstrom, Richard. Frogs, Toads and Salamander as Pets. Ives Washburn, 1972.