Hurley, P. J. (2006). Concise Introduction To Logic (9th ed.). Thomson.
Dyfyniad Arddull ChicagoHurley, Pattrick J. Concise Introduction To Logic. 9th ed. Australia: Thomson, 2006.
Dyfyniad MLAHurley, Pattrick J. Concise Introduction To Logic. 9th ed. Thomson, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.