Hewitt, D. (1956). Mountain rescue. Eyre & Spottiswoode.
Cita Chicago (17th ed.)Hewitt, Douglas. Mountain Rescue. London: Eyre & Spottiswoode, 1956.
Cita MLA (8th ed.)Hewitt, Douglas. Mountain Rescue. Eyre & Spottiswoode, 1956.
Atenció: Aquestes cites poden no estar 100% correctes.