Cita APA

Ryan, K. J., & Ryan, K. J. &. R. (1994). Sherri's Medical Microbiology: Introduction to Infectious Diseases. McGrawHill.

Chicago Edition Citation

Ryan, Kenneth J., i Kenneth J. & Ray Ryan. Sherri's Medical Microbiology: Introduction to Infectious Diseases. New York: McGrawHill, 1994.

Cita MLA

Ryan, Kenneth J., i Kenneth J. & Ray Ryan. Sherri's Medical Microbiology: Introduction to Infectious Diseases. McGrawHill, 1994.