APA (7th ed.) Citation

L'Engle, M., & Giotto, 1. (1990). The glorious impossible. Simon and Schuster Books for Young Readers.

Chicago Style (17th ed.) Citation

L'Engle, Madeleine, and 1266?-1337 Giotto. The Glorious Impossible. New York: Simon and Schuster Books for Young Readers, 1990.

MLA (8th ed.) Citation

L'Engle, Madeleine, and 1266?-1337 Giotto. The Glorious Impossible. Simon and Schuster Books for Young Readers, 1990.