Carleson, James W., "Images of the Gay Male in Contemporary Drama," in Gayspeak: Gay Male and Lesbian Communication, Pilgrim, 1981.

In this critical study, Carleson comments on the homosexual image in Cristofer's work.

Cristofer, Michael, Black Angel, Dramatists Play Service, 1984.

This play is based on the story of a former Nazi who, upon being released from prison, must deal with the wreckage of his past.

Duclow, Donald F., "Dying on Broadway: Contemporary Drama and Mortality," in Soundings: An Interdisciplinary Journal, Summer 1981, pp. 197-216.

In this work, Duclow comments on the work of Cristofer as it relates to death and dying.

Gross, Leonard, "Michael Cristofer Writes 'A Play of Questions,"' in New York Times, June 25, 1978. 

Gross provides an insightful review of Cristofer's play.