Kent, R. D. (1975). Journal of Speech and Hearing Research. American Speech-Language-Hearing Association.
Dyfyniad Arddull ChicagoKent, Raymond D. Journal of Speech and Hearing Research. Maryland: American Speech-Language-Hearing Association, 1975.
Dyfyniad MLAKent, Raymond D. Journal of Speech and Hearing Research. American Speech-Language-Hearing Association, 1975.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.