Liu, C., & Peterson, M. (2013). Wooby & Peep: A story of unlikely friendship. Sterling Children's Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLiu, Cynthea, और Mary Peterson. Wooby & Peep: A Story of Unlikely Friendship. New York: Sterling Children's Books, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLiu, Cynthea, और Mary Peterson. Wooby & Peep: A Story of Unlikely Friendship. Sterling Children's Books, 2013.
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