Ryan, K. J., & Ray, C. G. (2004). Sherris medical microbiology: An introduction to infectious diseases (4th ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Ryan, Kenneth J., agus C. George Ray. Sherris Medical Microbiology: An Introduction to Infectious Diseases. 4th ed. New York: McGraw-Hill, 2004.
Lua MLA (9ú heag.)Ryan, Kenneth J., agus C. George Ray. Sherris Medical Microbiology: An Introduction to Infectious Diseases. 4th ed. McGraw-Hill, 2004.
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