STRAHLER, A. N. (1965). Physical geography. Wiley.
Cita Chicago (17th ed.)STRAHLER, Arthur N. Physical Geography. New York: Wiley, 1965.
Cita MLA (9th ed.)STRAHLER, Arthur N. Physical Geography. Wiley, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.