APA (7th ed.) Zitazioa
Enger, E. D. (1979). Concepts in biology (2d ed.). W. C. Brown Co..
Chicago Style (17th ed.) Zitazioa
Enger, Eldon D. Concepts in Biology. 2d ed. Dubuque, Iowa: W. C. Brown Co., 1979.
MLA (9th ed.) Zitazioa
Enger, Eldon D. Concepts in Biology. 2d ed. W. C. Brown Co., 1979.
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