APA (7th ed.) Citation

Guare, J. (1990). Six degrees of separation: A play (First edition.). Random House.

Chicago Style (17th ed.) Citation

Guare, John. Six Degrees of Separation: A Play. First edition. New York: Random House, 1990.

MLA (9th ed.) Citation

Guare, John. Six Degrees of Separation: A Play. First edition. Random House, 1990.