Deismireacht APA

Christopherson, R. W. (2006). Geosystems: An introduction to physical geography (6th ed.). Pearson.

Chicago Edition Citation

Christopherson, Robert W. Geosystems: An Introduction to Physical Geography. 6th ed. New Jersey: Pearson, 2006.

Deismireacht MLA

Christopherson, Robert W. Geosystems: An Introduction to Physical Geography. 6th ed. Pearson, 2006.

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