Paula Metcalf. (2008). Norma Snows (Illustrated edition.). Macmillan Children's Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPaula Metcalf. Norma Snows. Illustrated edition. Macmillan Children's Books, 2008.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPaula Metcalf. Norma Snows. Illustrated edition. Macmillan Children's Books, 2008.
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