APA-referens

Cunningham, W. P. (2007). Environmental science: A globl concern. Boston: McGraw-Hill Higher Education.

Chicago-stil citat

Cunningham, William P. Environmental Science: A Globl Concern. Boston: McGraw-Hill Higher Education, 2007.

MLA-referens

Cunningham, William P. Environmental Science: A Globl Concern. Boston: McGraw-Hill Higher Education, 2007.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.