Crouch, Marcus. "Break of Dark." Junior Bookshelf 46,4 (August 1982): 155-156.

Crouch terms "Sergeant Nice" a small masterpiece, and comments on the subtle, progressive exploration of the fantastic dimension in commonplace reality.

Hadley, Eric. "Robert Westall." In Twentieth Century Children's Writers.

3d ed. Chicago: St. James Press, 1989.

A brief but useful survey of changes in Westall's fiction during the first decade of his writing career.

Hayes, Sarah. "Glimpses of the Void."

Times Literary Supplement 4138 (July 23, 1982): 789. This reviewer comments not only on the significance of the title, Break of Dark, but also on Westall's narrative technique in the collection.

"Robert Westall." In Contemporary Authors. New Revision Series. Vol. 18.

Detroit: Gale Research, 1986: 480-482.

This is an important reference entry because it features a short interview with the author, in which he discusses his perception of the past and present, and the special challenges facing writers in contemporary times...