Cita APA (7th ed.)

Ryan, K. J., & Ray, C. G. (2004). Sherris medical microbiology: An introduction to infectious diseases (4th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Ryan, Kenneth J., i C. George Ray. Sherris Medical Microbiology: An Introduction to Infectious Diseases. 4th ed. New York: McGraw-Hill, 2004.

Cita MLA (9th ed.)

Ryan, Kenneth J., i C. George Ray. Sherris Medical Microbiology: An Introduction to Infectious Diseases. 4th ed. McGraw-Hill, 2004.