Dyfyniad APA

Vasile, A. J., & Mintz, H. K. (1980). Speak with confidence: A practical guide (2nd ed.). Scott, Foresman.

Dyfyniad Arddull Chicago

Vasile, Albert J., and Harold K. Mintz. Speak with Confidence: A Practical Guide. 2nd ed. Illinois: Scott, Foresman, 1980.

Dyfyniad MLA

Vasile, Albert J., and Harold K. Mintz. Speak with Confidence: A Practical Guide. 2nd ed. Scott, Foresman, 1980.

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