APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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