Ritchie, D. (1983). Biology (2nd ed.). Addison-Wesley Publishing Company.
Chicago Style (17th ed.) CitationRitchie, Donald. Biology. 2nd ed. Reading, Mass.: Addison-Wesley Publishing Company, 1983.
MLA (9th ed.) CitationRitchie, Donald. Biology. 2nd ed. Addison-Wesley Publishing Company, 1983.
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