Schagrin, M. L. (1979). The language of logic: A self-instruction text (2nd ed.). Random House.
Chicago-viite (17. p.)Schagrin, Morton L. The Language of Logic: A Self-instruction Text. 2nd ed. New York: Random House, 1979.
MLA-viite (9. p.)Schagrin, Morton L. The Language of Logic: A Self-instruction Text. 2nd ed. Random House, 1979.
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