APA استشهاد

Dinesh Kumar Singh. (2019). Urban pollution and its management. Karan publishers.

استشهاد بنمط شيكاغو

Dinesh Kumar Singh. Urban Pollution and Its Management. New Delhi: Karan publishers, 2019.

MLA استشهاد

Dinesh Kumar Singh. Urban Pollution and Its Management. Karan publishers, 2019.