Curley, R. (2012). Renewable and alternative energy. Britannica Educational Pub., in association with Rosen Educational Services.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCurley, Robert. Renewable and Alternative Energy. New York: Britannica Educational Pub., in association with Rosen Educational Services, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCurley, Robert. Renewable and Alternative Energy. Britannica Educational Pub., in association with Rosen Educational Services, 2012.
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