Dyfyniad APA

Hurley, P. J., & Watson, L. (2018). Concise introduction to logic (13th ed.). Cengage.

Dyfyniad Arddull Chicago

Hurley, Patrick J., and Lori Watson. Concise Introduction to Logic. 13th ed. India: Cengage, 2018.

Dyfyniad MLA

Hurley, Patrick J., and Lori Watson. Concise Introduction to Logic. 13th ed. Cengage, 2018.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.