Levi, I. (1991). The Fixation of belief and its undoing: Changing beliefs through inquiry. C.U. Pr..
Chicago-viite (17. p.)Levi, Isaac. The Fixation of Belief and Its Undoing: Changing Beliefs Through Inquiry. Cambridge: C.U. Pr., 1991.
MLA-viite (9. p.)Levi, Isaac. The Fixation of Belief and Its Undoing: Changing Beliefs Through Inquiry. C.U. Pr., 1991.
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