APA-ийн эшлэл(7 дахь хэвлэлт)

Gupta, K. (2005). Encyclopaedia of Environment: Environment Problems and Policies. Atlantic Publishers & Distributors.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Gupta, K.R. Encyclopaedia of Environment: Environment Problems and Policies. New Delhi: Atlantic Publishers & Distributors, 2005.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Gupta, K.R. Encyclopaedia of Environment: Environment Problems and Policies. Atlantic Publishers & Distributors, 2005.