Cita APA (7th ed.)

Gordon, M., & Gordon, G. (1964). Undercover cat. Macdonald.

Cita Chicago (17th ed.)

Gordon, Mildred, i Gordon Gordon. Undercover Cat. London: Macdonald, 1964.

Cita MLA (8th ed.)

Gordon, Mildred, i Gordon Gordon. Undercover Cat. Macdonald, 1964.