Bereiter, C., & Anderson, V. (1989). Willy the Wisher and other thinking stories: An Open Court thinking story book. Open Court.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBereiter, Carl, और Valerie Anderson. Willy the Wisher and Other Thinking Stories: An Open Court Thinking Story Book. La Salle, Ill.: Open Court, 1989.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBereiter, Carl, और Valerie Anderson. Willy the Wisher and Other Thinking Stories: An Open Court Thinking Story Book. Open Court, 1989.
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