Pond, A. W. (1969). Survival in sun and sand. Norton.
Cita Chicago (17th ed.)Pond, Alonzo W. Survival in Sun and Sand. New York: Norton, 1969.
Cita MLA (9th ed.)Pond, Alonzo W. Survival in Sun and Sand. Norton, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.