Kathleen Weidner Zoehfeld. (2010). Where Did Dinosaurs Come From? (Let's-Read-and-Find-Out Science 2). HarperCollins.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKathleen Weidner Zoehfeld. Where Did Dinosaurs Come From? (Let's-Read-and-Find-Out Science 2). HarperCollins, 2010.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKathleen Weidner Zoehfeld. Where Did Dinosaurs Come From? (Let's-Read-and-Find-Out Science 2). HarperCollins, 2010.
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