Mader, S. S. (1988). Inquiry into life (5th.ed.). WCB.
Chicago-čujuhus (17. p.)Mader, Sylvia S. Inquiry into Life. 5th.ed. Iowa: WCB, 1988.
MLA-čujuhus (9. p.)Mader, Sylvia S. Inquiry into Life. 5th.ed. WCB, 1988.
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