APA (7th ed.) Citation

Wallechinsky, D. (2007). The knowledgebook: Everything you need to know to get by in the 21st Century. National Geographic Society.

Chicago Style (17th ed.) Citation

Wallechinsky, David. The Knowledgebook: Everything You Need to Know to Get by in the 21st Century. Washington, D.C: National Geographic Society, 2007.

MLA (9th ed.) Citation

Wallechinsky, David. The Knowledgebook: Everything You Need to Know to Get by in the 21st Century. National Geographic Society, 2007.