NORTON, C. F. (1981). Microbiology. Addison-Wesley.
Tohutoru Kātū Chicago (17th ed.)NORTON, Cynthia Friend. Microbiology. Reading, Mass.: Addison-Wesley, 1981.
Tohutoro MLA (9th ed.)NORTON, Cynthia Friend. Microbiology. Addison-Wesley, 1981.
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