Cooper, Susan. Review. New York Times Book Review, 30 (November 1986): 104. Cooper, herself a Newbery Medal winning novelist, notes analogies between the Flood as described in Many Waters and the possibility of nuclear holocaust. She also argues that the novel is a fitting sequel to A Wrinkle in Time and that L'Engle is a skillful storyteller.

Franklin, Hugh. "Madeleine L'Engle."

Horn Book 39 (1963): 356-360. A brief biographical sketch by L'Engle's husband, written when she won the Newbery Medal for A Wrinkle in Time.

Hammond, Wayne G. "In L'Engle Waters." Mythlore 13,3 (1987): 43-44.

This review notes that L'Engle handles controversial elements in the novel with propriety and that, while the novel lacks action and humor, it firmly holds the reader's attention.

Hettinga, Donald R. Presenting Madeleine L'Engle. New York: Twayne, 1993. A critical study of L'Engle's works. Hettinga sees Many Waters as an exploration of the twins' pragmatism which is...