APA (7th ed.) Citation

Ditmars, R. L., & Bridges, W. (1937). Wild animal world: Behind the scenes at the Zoo. D. Appleton-Century company, incorporated.

Chicago Style (17th ed.) Citation

Ditmars, Raymond Lee, and William Bridges. Wild Animal World: Behind the Scenes at the Zoo. New York, London: D. Appleton-Century company, incorporated, 1937.

MLA (8th ed.) Citation

Ditmars, Raymond Lee, and William Bridges. Wild Animal World: Behind the Scenes at the Zoo. D. Appleton-Century company, incorporated, 1937.