APA (7th ed.) Citation

Hughes, C. D., & Aguilar, D. A. (2012). First big book of space. National Geographic.

Chicago Style (17th ed.) Citation

Hughes, Catherine D., and David A. Aguilar. First Big Book of Space. Washington, D.C.: National Geographic, 2012.

MLA (8th ed.) Citation

Hughes, Catherine D., and David A. Aguilar. First Big Book of Space. National Geographic, 2012.

Warning: These citations may not always be 100% accurate.