APA-referens

Jackson, N., & Penn, P. Dictionary of natural resources and their principal uses/2nd ed (2nd ed.).

Chicago-stil citat

Jackson, Nora, och Philip Penn. Dictionary of Natural Resources and Their Principal Uses/2nd Ed. 2nd ed.

MLA-referens

Jackson, Nora, och Philip Penn. Dictionary of Natural Resources and Their Principal Uses/2nd Ed. 2nd ed.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.