Parkin, K. (1969). Ideal voice and speech training: A book of exercises (Rev., with additional material.). S. French.
Dyfyniad Arddull ChicagoParkin, Ken. Ideal Voice and Speech Training: A Book of Exercises. Rev., with additional material. London ; New York: S. French, 1969.
Dyfyniad MLAParkin, Ken. Ideal Voice and Speech Training: A Book of Exercises. Rev., with additional material. S. French, 1969.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.