Beall, A., Clifton, M., Gamble, P., & Crisp, D. (2021). How space works: The facts visually explained (First American edition.). DK Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBeall, Abigail, Mark Clifton, Phil Gamble, और Dan Crisp. How Space Works: The Facts Visually Explained. First American edition. New York, NY: DK Publishing, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBeall, Abigail, et al. How Space Works: The Facts Visually Explained. First American edition. DK Publishing, 2021.
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