Magnus 2012 – An Introduction to Formal Logic

Magnus, P. D. (2012). An Introduction to Formal Logic. Fecundity. https://open.umn.edu/opentextbooks/textbooks/54

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Gimbel, S. (2016). Introduction to formal logic. Chantilly: The Teaching Company.

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Gimbel, S. (2016). Truth-functional logic. Chantilly: The Teaching Company.

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Gimbel, S. (2016). Truth tables. Chantilly: The Teaching Company.