Cita APA (7a ed.)

Berkowitz, G. M. (1992). American drama of the twentieth century. Longman.

Cita Chicago Style (17a ed.)

Berkowitz, Gerald M. American Drama of the Twentieth Century. London ; New York: Longman, 1992.

Cita MLA (8a ed.)

Berkowitz, Gerald M. American Drama of the Twentieth Century. Longman, 1992.