Johnson, A. G. (1993). Microbiology and immunology. Harwal Publishing.
Chicago Style aipamenaJohnson, Arthur G. Microbiology and Immunology. Pennsylvania: Harwal Publishing, 1993.
MLA aipamenaJohnson, Arthur G. Microbiology and Immunology. Harwal Publishing, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.