APA استشهاد

Sinha, U. P. (2007). Economics of social sector and environment. Concept Publishing Company.

استشهاد بنمط شيكاغو

Sinha, Udai Prakash. Economics of Social Sector and Environment. New Delhi: Concept Publishing Company, 2007.

MLA استشهاد

Sinha, Udai Prakash. Economics of Social Sector and Environment. Concept Publishing Company, 2007.