Cita APA (7th ed.)

Olivy, D. J. (1970). Never ask a policeman. Gollancz.

Cita Chicago (17th ed.)

Olivy, D. J. Never Ask a Policeman. London: Gollancz, 1970.

Cita MLA (8th ed.)

Olivy, D. J. Never Ask a Policeman. Gollancz, 1970.