APA (7th ed.) Citation

Henderson, D. A. (2009). Smallpox: The death of a disease. Prometheus Books.

Chicago Style (17th ed.) Citation

Henderson, D. A. Smallpox: The Death of a Disease. NY: Prometheus Books, 2009.

MLA (9th ed.) Citation

Henderson, D. A. Smallpox: The Death of a Disease. Prometheus Books, 2009.

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