APA (7th ed.) Citation

L'Engle, M. (1976). A wrinkle in time. Dell Publishing.

Chicago Style (17th ed.) Citation

L'Engle, Madeleine. A Wrinkle in Time. New York: Dell Publishing, 1976.

MLA (9th ed.) Citation

L'Engle, Madeleine. A Wrinkle in Time. Dell Publishing, 1976.