APA (7th ed.) Citation

Opie, I. A., & Opie, P. (1973). The Oxford book of children's verse. Oxford University Press.

Chicago Style (17th ed.) Citation

Opie, Iona Archibald, and Peter Opie. The Oxford Book of Children's Verse. New York: Oxford University Press, 1973.

MLA (9th ed.) Citation

Opie, Iona Archibald, and Peter Opie. The Oxford Book of Children's Verse. Oxford University Press, 1973.