APA (7th ed.) Zitazioa
Donahue, J., & Trump, E. (2010). American zoos during the depression: A new deal for animals. McFarland & Company, Inc., Publishers.
Chicago Style (17th ed.) Zitazioa
Donahue, Jesse, eta Erik Trump. American Zoos During the Depression: A New Deal for Animals. Jefferson, N.C.: McFarland & Company, Inc., Publishers, 2010.
MLA (9th ed.) Zitazioa
Donahue, Jesse, eta Erik Trump. American Zoos During the Depression: A New Deal for Animals. McFarland & Company, Inc., Publishers, 2010.
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