GREEN JEN. (2019). THE ENVIRONMENT CHALLENGE - REDUCING POLLUTION AND WASTE (2014 Ed.). RAINTREE PUBLISHERS.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGREEN JEN. THE ENVIRONMENT CHALLENGE - REDUCING POLLUTION AND WASTE. 2014 Ed. CHICAGO: RAINTREE PUBLISHERS, 2019.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGREEN JEN. THE ENVIRONMENT CHALLENGE - REDUCING POLLUTION AND WASTE. 2014 Ed. RAINTREE PUBLISHERS, 2019.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.