Cita APA (7a ed.)

Proctor, H., & London, P. S. (1962). Principles for first aid for the injured. Butterworth.

Cita Chicago Style (17a ed.)

Proctor, Henry, y P. S. London. Principles for First Aid for the Injured. London: Butterworth, 1962.

Cita MLA (9a ed.)

Proctor, Henry, y P. S. London. Principles for First Aid for the Injured. Butterworth, 1962.