APA-referens

Christopherson, R. W. (2015). Geosystems: An introduction to physical geography. Harlow, England: Pearson Education Limited.

Chicago-stil citat

Christopherson, Robert W. Geosystems: An Introduction to Physical Geography. Harlow, England: Pearson Education Limited, 2015.

MLA-referens

Christopherson, Robert W. Geosystems: An Introduction to Physical Geography. Harlow, England: Pearson Education Limited, 2015.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.