Παραπομπή APA

Surendraprathap Singh & Nishant Singh. (2001). Paryavaran aur janjagarkta. Sadik.

Παραπομπή Chicago Style

Surendraprathap Singh και Nishant Singh. Paryavaran Aur Janjagarkta. New Delhi: Sadik, 2001.

Παραπομπή MLA

Surendraprathap Singh και Nishant Singh. Paryavaran Aur Janjagarkta. Sadik, 2001.