Arnold, N. (2002). Horrible Science: The Terrible Truth About Time. Scholastic Children's Book.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रArnold, Nick. Horrible Science: The Terrible Truth About Time. London: Scholastic Children's Book, 2002.
एमएलए (9वां संस्करण) प्रशस्ति पत्रArnold, Nick. Horrible Science: The Terrible Truth About Time. Scholastic Children's Book, 2002.
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