APA (7th ed.) Citation

Johnston, M. (1999). Gorillas and their babies. PowerKids Press.

Chicago Style (17th ed.) Citation

Johnston, Marianne. Gorillas and Their Babies. New York: PowerKids Press, 1999.

MLA (9th ed.) Citation

Johnston, Marianne. Gorillas and Their Babies. PowerKids Press, 1999.

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