Dyfyniad APA

409334 Roberts, J. (1985). Steps to fluency: A short course in communication. Oxford : Pergamon.

Dyfyniad Arddull Chicago

409334 Roberts, Jon. Steps to Fluency: A Short Course in Communication. Oxford : Pergamon, 1985.

Dyfyniad MLA

409334 Roberts, Jon. Steps to Fluency: A Short Course in Communication. Oxford : Pergamon, 1985.

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