APA (7th ed.) Citation

Christopherson, R. W. (1992). Geosystems: An introduction to physical geography. Macmillan.

Chicago Style (17th ed.) Citation

Christopherson, Robert W. Geosystems: An Introduction to Physical Geography. New York: Macmillan, 1992.

MLA (9th ed.) Citation

Christopherson, Robert W. Geosystems: An Introduction to Physical Geography. Macmillan, 1992.

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