APA (7th ed.) Citation

World Book, Inc. (2008). Tornadoes. World Book.

Chicago Style (17th ed.) Citation

World Book, Inc. Tornadoes. Chicago, Ill: World Book, 2008.

MLA (9th ed.) Citation

World Book, Inc. Tornadoes. World Book, 2008.

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