APA (7th ed.) Citation

Strahler, A. N. (1960). Physical geography (2a. ed.). John Wiley.

Chicago Style (17th ed.) Citation

Strahler, Arthur N. Physical Geography. 2a. ed. Nueva York: John Wiley, 1960.

MLA (9th ed.) Citation

Strahler, Arthur N. Physical Geography. 2a. ed. John Wiley, 1960.