Cita APA (7a ed.)

Strahler, A. N. (1960). Physical geography. John Wiley & Sons.

Cita Chicago Style (17a ed.)

Strahler, Arthur N. Physical Geography. New York: John Wiley & Sons, 1960.

Cita MLA (9a ed.)

Strahler, Arthur N. Physical Geography. John Wiley & Sons, 1960.