APA-referens

Onkar singh et al. (1993). Frontiers in environmental geography. Concept Publishing Company.

Chicago-stil citat

Onkar singh et al. Frontiers in Environmental Geography. New Delhi: Concept Publishing Company, 1993.

MLA-referens

Onkar singh et al. Frontiers in Environmental Geography. Concept Publishing Company, 1993.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.