APA (7th ed.) Citation

Giganti, P., & Crews, D. (1992). Each orange had 8 slices: A counting book. Greenwillow Books.

Chicago Style (17th ed.) Citation

Giganti, Paul, and Donald Crews. Each Orange Had 8 Slices: A Counting Book. New York: Greenwillow Books, 1992.

MLA (8th ed.) Citation

Giganti, Paul, and Donald Crews. Each Orange Had 8 Slices: A Counting Book. Greenwillow Books, 1992.