APA-referens

Dupree, W. G. (1972). United States Energy Through the Year 2000. Washington: U.S. Department of teh Interior.

Chicago-stil citat

Dupree, Walter G. United States Energy Through the Year 2000. Washington: U.S. Department of teh Interior, 1972.

MLA-referens

Dupree, Walter G. United States Energy Through the Year 2000. Washington: U.S. Department of teh Interior, 1972.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.