Dyfyniad APA

Chaffee, J. (2006). Thinking critically (Eight edition.). Houghton Mifflin.

Dyfyniad Arddull Chicago

Chaffee, John. Thinking Critically. Eight edition. Boston: Houghton Mifflin, 2006.

Dyfyniad MLA

Chaffee, John. Thinking Critically. Eight edition. Houghton Mifflin, 2006.

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