APA (7 वां संस्करण) प्रशस्ति पत्र

Wright, R. T., & Boorse, D. (2011). Environmental science: Toward a sustainable future (11th ed.). Benjamin Cummings ; PHI Learning Pvt. Ltd..

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Wright, Richard T., और Dorothy Boorse. Environmental Science: Toward a Sustainable Future. 11th ed. Boston: Benjamin Cummings ; PHI Learning Pvt. Ltd., 2011.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Wright, Richard T., और Dorothy Boorse. Environmental Science: Toward a Sustainable Future. 11th ed. Benjamin Cummings ; PHI Learning Pvt. Ltd., 2011.