Wells, R. (2014). Sophie's terrible twos. Viking, published by Penguin Group.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWells, Rosemary. Sophie's Terrible Twos. New York: Viking, published by Penguin Group, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWells, Rosemary. Sophie's Terrible Twos. Viking, published by Penguin Group, 2014.
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