APA-referens

Chopra, J. K. (2019). Environmental ecology. Unique Publishers (I) pvt. Ltd..

Chicago-stil citat

Chopra, J. K. Environmental Ecology. New Delhi: Unique Publishers (I) pvt. Ltd., 2019.

MLA-referens

Chopra, J. K. Environmental Ecology. Unique Publishers (I) pvt. Ltd., 2019.