Cita APA (7th ed.)

L'Engle, M. (1978). A swiftly tilting planet. Dell Pub.

Cita Chicago (17th ed.)

L'Engle, Madeleine. A Swiftly Tilting Planet. New York: Dell Pub, 1978.

Cita MLA (9th ed.)

L'Engle, Madeleine. A Swiftly Tilting Planet. Dell Pub, 1978.