APA (7th ed.) Citation

Strahler,Alan, Strahler,Arthur, & Duvall,James G. (1997). Physical geography: Science and systems of the Human Environment. John Wiley & Sons.

Chicago Style (17th ed.) Citation

Strahler,Alan, Strahler,Arthur, and Duvall,James G. Physical Geography: Science and Systems of the Human Environment. New York: John Wiley & Sons, 1997.

MLA (9th ed.) Citation

Strahler,Alan, et al. Physical Geography: Science and Systems of the Human Environment. John Wiley & Sons, 1997.

Warning: These citations may not always be 100% accurate.