APA (7th ed.) Citation

Hopkins, D. R. (2002). The greatest killer: Smallpox in history, with a new introduction. University of Chicago Press.

Chicago Style (17th ed.) Citation

Hopkins, Donald R. The Greatest Killer: Smallpox in History, with a New Introduction. Chicago ; London: University of Chicago Press, 2002.

MLA (9th ed.) Citation

Hopkins, Donald R. The Greatest Killer: Smallpox in History, with a New Introduction. University of Chicago Press, 2002.