Hurley, P. J. (1985). A concise introduction to logic (2 ed.). Wadsworth.
Cita Chicago Style (17a ed.)Hurley, Patrick J. A Concise Introduction to Logic. 2 ed. Belmont: Wadsworth, 1985.
Cita MLA (9a ed.)Hurley, Patrick J. A Concise Introduction to Logic. 2 ed. Wadsworth, 1985.
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