Cita APA (7a ed.)

Adams, P., & Adams, S. (1982). Knockback. Duckworth.

Cita Chicago Style (17a ed.)

Adams, Peter, y Shirley Adams. Knockback. London: Duckworth, 1982.

Cita MLA (9a ed.)

Adams, Peter, y Shirley Adams. Knockback. Duckworth, 1982.