Martinez, S. T. (1980). Logic: A textbook in deductive reasoning. Alemar-Phoenix.
Chicago-viite (17. p.)Martinez, Salvador T. Logic: A Textbook in Deductive Reasoning. Quezon City: Alemar-Phoenix, 1980.
MLA-viite (9. p.)Martinez, Salvador T. Logic: A Textbook in Deductive Reasoning. Alemar-Phoenix, 1980.
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