Engdahl, Sylvia, and Rick Robertson, eds. Universe Ahead: Stories of the Future. New York: Atheneum, 1975.

Engdahl's introduction and her selection of stories highlight her unique view of what science fiction is all about.

Le Guin, Ursula K. "Review." New York Times Book Review (May 3, 1970): 2223. A short review by a renowned writer with whose work Engdahl's has sometimes been compared.

Metzger, Linda, ed. Contemporary Authors. New Revision Series. Vol. 14.

Detroit: Gale Research, 1985. Contains biographical information, along with a section explaining Engdahl's intentions in her writing.