APA-referens (7:e uppl.)

Wilhelm Prince of Sweden. (1926). Among pygmies and gorillas with the Swedish zoological expedition to Central Africa, 1921 (New ed.). Dutton.

Chicago-referens (17:e uppl.)

Wilhelm Prince of Sweden. Among Pygmies and Gorillas with the Swedish Zoological Expedition to Central Africa, 1921. New ed. New York: Dutton, 1926.

MLA-referens (9:e uppl.)

Wilhelm Prince of Sweden. Among Pygmies and Gorillas with the Swedish Zoological Expedition to Central Africa, 1921. New ed. Dutton, 1926.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.