APA (7th ed.) Citation

Ridout, R., & Holt, M. (1974). The life cycle of butterflies. Grosset and Dunlap.

Chicago Style (17th ed.) Citation

Ridout, Ronald, and Michael Holt. The Life Cycle of Butterflies. New York: Grosset and Dunlap, 1974.

MLA (9th ed.) Citation

Ridout, Ronald, and Michael Holt. The Life Cycle of Butterflies. Grosset and Dunlap, 1974.