APA (7th ed.) Citation

L'Engle, M. (1978). A swiftly tilting planet. Square Fish.

Chicago Style (17th ed.) Citation

L'Engle, Madeleine. A Swiftly Tilting Planet. New York: Square Fish, 1978.

MLA (9th ed.) Citation

L'Engle, Madeleine. A Swiftly Tilting Planet. Square Fish, 1978.