APA (7th ed.) Citation

Turkington, C., & Ashby, B. (1998). Encyclopedia of infectious diseases. Facts on File.

Chicago Style (17th ed.) Citation

Turkington, Carol, and Bonnie Ashby. Encyclopedia of Infectious Diseases. New York: Facts on File, 1998.

MLA (8th ed.) Citation

Turkington, Carol, and Bonnie Ashby. Encyclopedia of Infectious Diseases. Facts on File, 1998.