Aguilar, D. A., Pulliam, C., & Daniels, P. (2020). Space encyclopedia: A tour of our solar system and beyond (Second edition.). National Geographic.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAguilar, David A., Christine Pulliam, और Patricia Daniels. Space Encyclopedia: A Tour of Our Solar System and Beyond. Second edition. Washington, D.C.: National Geographic, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAguilar, David A., et al. Space Encyclopedia: A Tour of Our Solar System and Beyond. Second edition. National Geographic, 2020.
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