BOYD, R. F. (1980). Medical microbiology - robert F Boyd. little Brown and company.
Lua i Stíl Chicago (17ú heag.)BOYD, Robert F. Medical Microbiology - Robert F Boyd. little Brown and company, 1980.
Lua MLA (8ú heag.)BOYD, Robert F. Medical Microbiology - Robert F Boyd. little Brown and company, 1980.
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