Cita APA (7th ed.)

Janssen, V. (2002). Homosexual men in action: 1890-1930. Janssen.

Cita Chicago (17th ed.)

Janssen, Volker. Homosexual Men in Action: 1890-1930. Simon`s Town: Janssen, 2002.

Cita MLA (8th ed.)

Janssen, Volker. Homosexual Men in Action: 1890-1930. Janssen, 2002.