Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (9e éd.)

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