Fisher, V. (2006). How high can a dinosaur count?: And other math mysteries. Schwartz & Wade Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFisher, Valorie. How High Can a Dinosaur Count?: And Other Math Mysteries. New York: Schwartz & Wade Books, 2006.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFisher, Valorie. How High Can a Dinosaur Count?: And Other Math Mysteries. Schwartz & Wade Books, 2006.
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