Cita APA (7a ed.)

Yarsley, V. E., & Couzens, E. G. (1941). Plastics. Penguin Books.

Cita Chicago Style (17a ed.)

Yarsley, V. E., y Edward Gordon Couzens. Plastics. Harmondsworth Middlesex ;New York: Penguin Books, 1941.

Cita MLA (9a ed.)

Yarsley, V. E., y Edward Gordon Couzens. Plastics. Penguin Books, 1941.