Woodruff, L. (2020). Once upon a winter day (First edition.). Holiday House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWoodruff, Liza. Once upon a Winter Day. First edition. New York: Holiday House, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWoodruff, Liza. Once upon a Winter Day. First edition. Holiday House, 2020.
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