Muth, J. J. (2014). Hi, Koo!: A year of seasons (First edition.). Scholastic Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMuth, Jon J. Hi, Koo!: A Year of Seasons. First edition. New York: Scholastic Press, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMuth, Jon J. Hi, Koo!: A Year of Seasons. First edition. Scholastic Press, 2014.
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