Cita APA (7a ed.)

Hamble, R. (1991). What's wrong with my Willy? (1. Auflage.). GMP Publishers.

Cita Chicago Style (17a ed.)

Hamble, Ray. What's Wrong with My Willy? 1. Auflage. London: GMP Publishers, 1991.

Cita MLA (8a ed.)

Hamble, Ray. What's Wrong with My Willy? 1. Auflage. GMP Publishers, 1991.