National Geographic. (2008). The science book: Everything you need to know about the world and how it works. National Geographic.
Chicago-Zitierstil (17. Ausg.)National Geographic. The Science Book: Everything You Need to Know About the World and How It Works. Washington, D.C: National Geographic, 2008.
MLA-Zitierstil (9. Ausg.)National Geographic. The Science Book: Everything You Need to Know About the World and How It Works. National Geographic, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.