APA (7th ed.) Citation

(1997). Discovering U.S. history (Version 1.0.). Gale Research.

Chicago Style (17th ed.) Citation

Discovering U.S. History. Version 1.0. Detroit: Gale Research, 1997.

MLA (8th ed.) Citation

Discovering U.S. History. Version 1.0. Gale Research, 1997.

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