Cita APA (7th ed.)
Donahue, J., & Trump, E. (2010). American zoos during the depression: A new deal for animals. McFarland & Company, Inc., Publishers.
Cita Chicago (17th ed.)
Donahue, Jesse, i Erik Trump. American Zoos During the Depression: A New Deal for Animals. Jefferson, N.C.: McFarland & Company, Inc., Publishers, 2010.
Cita MLA (9th ed.)
Donahue, Jesse, i Erik Trump. American Zoos During the Depression: A New Deal for Animals. McFarland & Company, Inc., Publishers, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.