Cita APA (7th ed.)
Scott, R. C. (1992). Physical geography (2nd ed.). west.
Cita Chicago (17th ed.)
Scott, Ralph C. Physical Geography. 2nd ed. New York: west, 1992.
Cita MLA (9th ed.)
Scott, Ralph C. Physical Geography. 2nd ed. west, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.