Cita APA (7a ed.)
Cohen, M. R. An Introduction to Logic. Harcourt, Brace and World.
Cita estilo Chicago (17a ed.)
Cohen, Morris R. An Introduction to Logic. Nueva York, EUA: Harcourt, Brace and World.
Cita MLA (9a ed.)
Cohen, Morris R. An Introduction to Logic. Harcourt, Brace and World.
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