APA (7th ed.) Citation

Strahler, A. H., & Strahler, A. N. (2003). Introducing physical geography (3. ed.). Wiley.

Chicago Style (17th ed.) Citation

Strahler, Alan H., and Arthur Newell Strahler. Introducing Physical Geography. 3. ed. New York, NY: Wiley, 2003.

MLA (9th ed.) Citation

Strahler, Alan H., and Arthur Newell Strahler. Introducing Physical Geography. 3. ed. Wiley, 2003.