Cita APA (7a ed.)

Strahler, A. H., & Strahler, A. N. (1992). Modern physical geography (4th ed.). Wiley.

Cita Chicago Style (17a ed.)

Strahler, Alan H., y Arthur N. Strahler. Modern Physical Geography. 4th ed. New York: Wiley, 1992.

Cita MLA (9a ed.)

Strahler, Alan H., y Arthur N. Strahler. Modern Physical Geography. 4th ed. Wiley, 1992.