Kelley & David. (1998). The Art of Reasoning (3rd ed.). W. W. Norton & Company.
Cita Chicago Style (17a ed.)Kelley y David. The Art of Reasoning. 3rd ed. New York: W. W. Norton & Company, 1998.
Cita MLA (9a ed.)Kelley y David. The Art of Reasoning. 3rd ed. W. W. Norton & Company, 1998.
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