APA-referens

Sehgal, J. L. (1992). Agro -ecological regions of India. Oxford and IBH publishing.

Chicago-stil citat

Sehgal, J L. Agro -ecological Regions of India. New Delhi: Oxford and IBH publishing, 1992.

MLA-referens

Sehgal, J L. Agro -ecological Regions of India. Oxford and IBH publishing, 1992.