APA (7th ed.) Citation

Strahler, A. H., & Strahler, A. N. (1992). Modern physical geography. John Wiley and Sons.

Chicago Style (17th ed.) Citation

Strahler, Alan H., and Arthur Newell Strahler. Modern Physical Geography. New York: John Wiley and Sons, 1992.

MLA (9th ed.) Citation

Strahler, Alan H., and Arthur Newell Strahler. Modern Physical Geography. John Wiley and Sons, 1992.