APA (7th ed.) Citation

Strahler, A., & Strahler, A. N. (1994). Introducing physical geography. John Wiley & Sons.

Chicago Style (17th ed.) Citation

Strahler, Alan, and Arthur Newell Strahler. Introducing Physical Geography. New York: John Wiley & Sons, 1994.

MLA (9th ed.) Citation

Strahler, Alan, and Arthur Newell Strahler. Introducing Physical Geography. John Wiley & Sons, 1994.