APA (7th ed.) Citation

World Book, Inc. (2011). The World Book encyclopedia of people and places. World Book.

Chicago Style (17th ed.) Citation

World Book, Inc. The World Book Encyclopedia of People and Places. Chicago: World Book, 2011.

MLA (9th ed.) Citation

World Book, Inc. The World Book Encyclopedia of People and Places. World Book, 2011.

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