APA (7th ed.) Citation

Strahler, A. H. (1997). Physical geography: Science and systems of the human environment. John Wiley.

Chicago Style (17th ed.) Citation

Strahler, Alan H. Physical Geography: Science and Systems of the Human Environment. New York: John Wiley, 1997.

MLA (8th ed.) Citation

Strahler, Alan H. Physical Geography: Science and Systems of the Human Environment. John Wiley, 1997.