Shipman, V. (2021). The secret of snow. Graydon House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रShipman, Viola. The Secret of Snow. Toronto, Ontario, Canada: Graydon House, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रShipman, Viola. The Secret of Snow. Graydon House, 2021.
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