Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (8a ed.)

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