APA (7 वां संस्करण) प्रशस्ति पत्र

Rajagopalan R. (2016). Environmental studies: From Crisis to Cure (3ed.). OUP.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Rajagopalan R. Environmental Studies: From Crisis to Cure. 3ed. New Delhi: OUP, 2016.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Rajagopalan R. Environmental Studies: From Crisis to Cure. 3ed. OUP, 2016.