APA (7th ed.) Citation

Lewin, T., & Lewin, B. (1999). Gorilla walk. Lothrop, Lee & Shepard Books.

Chicago Style (17th ed.) Citation

Lewin, Ted, and Betsy Lewin. Gorilla Walk. New York: Lothrop, Lee & Shepard Books, 1999.

MLA (9th ed.) Citation

Lewin, Ted, and Betsy Lewin. Gorilla Walk. Lothrop, Lee & Shepard Books, 1999.

Warning: These citations may not always be 100% accurate.