APA Citation

(2007). The Knowledgebook: Everything you need to know to get by in the 21 st century. Washington, D.C. : 4b National geographic.

Chicago Style Citation

The Knowledgebook: Everything You Need to Know to Get By in the 21 St Century. Washington, D.C. : 4b National geographic, 2007.

MLA Citation

The Knowledgebook: Everything You Need to Know to Get By in the 21 St Century. Washington, D.C. : 4b National geographic, 2007.

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