Woelfle, G. (2013). The wind at work: An activity guide to windmills (2nd ed.). Chicago Review Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWoelfle, Gretchen. The Wind at Work: An Activity Guide to Windmills. 2nd ed. Chicago: Chicago Review Press, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWoelfle, Gretchen. The Wind at Work: An Activity Guide to Windmills. 2nd ed. Chicago Review Press, 2013.
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