APA (7th ed.) Citation

Christopherson, R. W. (1997). Geosystems: An introduction to physical geography (3. ed.). Prentice Hall.

Chicago Style (17th ed.) Citation

Christopherson, Robert W. Geosystems: An Introduction to Physical Geography. 3. ed. Upper Saddle River, NJ: Prentice Hall, 1997.

MLA (9th ed.) Citation

Christopherson, Robert W. Geosystems: An Introduction to Physical Geography. 3. ed. Prentice Hall, 1997.