Copi, I. M., & Cohen, C. (2010). Introduction to logic (Thirteenth edition.). Pearson Education South Asia.
Dyfyniad Arddull ChicagoCopi, Irving M., and Carl Cohen. Introduction to Logic. Thirteenth edition. Singapore: Pearson Education South Asia, 2010.
Dyfyniad MLACopi, Irving M., and Carl Cohen. Introduction to Logic. Thirteenth edition. Pearson Education South Asia, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.