Cita APA (7a ed.)

Shaffer, P., Wesker, A., & Kops, B. (1968). Five finger exercise. Penguin Books.

Cita Chicago Style (17a ed.)

Shaffer, Peter, Arnold Wesker, y Bernard Kops. Five Finger Exercise. Harmondsworth: Penguin Books, 1968.

Cita MLA (9a ed.)

Shaffer, Peter, et al. Five Finger Exercise. Penguin Books, 1968.