APA (7th ed.) Citation

Caras, R. A., & Johnson, P. (1975). A zoo in your room. Harcourt Brace Jovanovich.

Chicago Style (17th ed.) Citation

Caras, Roger A., and Pamela Johnson. A Zoo in Your Room. New York: Harcourt Brace Jovanovich, 1975.

MLA (9th ed.) Citation

Caras, Roger A., and Pamela Johnson. A Zoo in Your Room. Harcourt Brace Jovanovich, 1975.