Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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