Fletcher, L. (1983). How to speak like a pro. New York: Ballantine books.
Dyfyniad Arddull ChicagoFletcher, Leon. How to Speak Like a Pro. New York: Ballantine books, 1983.
Dyfyniad MLAFletcher, Leon. How to Speak Like a Pro. New York: Ballantine books, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.