Cita APA (7th ed.)

Berkowitz, R., & Callen, M. (1983). How to have sex in an epedemic: One approach / [by: Richard Berkowitz & Michael Callen] (1. Auflage.). Tower.

Cita Chicago (17th ed.)

Berkowitz, Richard, i Michael Callen. How to Have Sex in an Epedemic: One Approach / [by: Richard Berkowitz & Michael Callen]. 1. Auflage. New York: Tower, 1983.

Cita MLA (8th ed.)

Berkowitz, Richard, i Michael Callen. How to Have Sex in an Epedemic: One Approach / [by: Richard Berkowitz & Michael Callen]. 1. Auflage. Tower, 1983.