Dyfyniad APA

Harrington, D. (2009). Speaking of speech: Basic presentation skills for beginners. Boston: Macmilan.

Dyfyniad Arddull Chicago

Harrington, David. Speaking of Speech: Basic Presentation Skills for Beginners. Boston: Macmilan, 2009.

Dyfyniad MLA

Harrington, David. Speaking of Speech: Basic Presentation Skills for Beginners. Boston: Macmilan, 2009.

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