APA (7th ed.) Citation

Roberts, A. (2007). A history of the English-speaking peoples since 1900 (1st U.S. ed.). HarperCollins.

Chicago Style (17th ed.) Citation

Roberts, Andrew. A History of the English-speaking Peoples Since 1900. 1st U.S. ed. New York: HarperCollins, 2007.

MLA (9th ed.) Citation

Roberts, Andrew. A History of the English-speaking Peoples Since 1900. 1st U.S. ed. HarperCollins, 2007.