Ellis, A. (2010). When Lulu went to the zoo. Andersen Press USA : Distributed in the United States by Lerner Publishing Group.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEllis, Andy. When Lulu Went to the Zoo. Minneapolis: Andersen Press USA : Distributed in the United States by Lerner Publishing Group, 2010.
एमएलए (8वां संस्करण) प्रशस्ति पत्रEllis, Andy. When Lulu Went to the Zoo. Andersen Press USA : Distributed in the United States by Lerner Publishing Group, 2010.
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