Hawes, J., & Fraser, M. A. (2000). Why frogs are wet (Newly illustrated ed.). HarperCollins Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHawes, Judy, और Mary Ann Fraser. Why Frogs Are Wet. Newly illustrated ed. New York: HarperCollins Publishers, 2000.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHawes, Judy, और Mary Ann Fraser. Why Frogs Are Wet. Newly illustrated ed. HarperCollins Publishers, 2000.
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