Mader, S. S. (1996). Biology (5th ed.). Wm. C. Brown Publishers.
Lua i Stíl Chicago (17ú heag.)Mader, Sylvia S. Biology. 5th ed. Dubuque, IA: Wm. C. Brown Publishers, 1996.
Lua MLA (8ú heag.)Mader, Sylvia S. Biology. 5th ed. Wm. C. Brown Publishers, 1996.
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