APA (7th ed.) Citation

Barker. (2001). Bad people in history. Gramercy Books.

Chicago Style (17th ed.) Citation

Barker. Bad People in History. New York: Gramercy Books, 2001.

MLA (8th ed.) Citation

Barker. Bad People in History. Gramercy Books, 2001.

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