Cita APA (7a ed.)

Strahler, . A. N. (1965). Physical geography (3rd ed.). Wiley.

Cita Chicago Style (17a ed.)

Strahler, Arthur N. Physical Geography. 3rd ed. New York: Wiley, 1965.

Cita MLA (9a ed.)

Strahler, Arthur N. Physical Geography. 3rd ed. Wiley, 1965.