Cita APA (7a ed.)

Shaw, B., & Laurence, D. H. (2000). Plays unpleasant. Penguin Books.

Cita Chicago Style (17a ed.)

Shaw, Bernard, y Dan H. Laurence. Plays Unpleasant. London ; New York: Penguin Books, 2000.

Cita MLA (8a ed.)

Shaw, Bernard, y Dan H. Laurence. Plays Unpleasant. Penguin Books, 2000.