APA (7th ed.) Citation

Patterson, F., & Cohn, R. H. (1987). Koko's story. Scholastic Inc..

Chicago Style (17th ed.) Citation

Patterson, Francine, and Ronald H. Cohn. Koko's Story. New York: Scholastic Inc., 1987.

MLA (9th ed.) Citation

Patterson, Francine, and Ronald H. Cohn. Koko's Story. Scholastic Inc., 1987.