Dyfyniad APA

American Speech-Language-Hearing Association. (1991). American journal of audiology. American Speech-Language-Hearing Association.

Dyfyniad Arddull Chicago

American Speech-Language-Hearing Association. American Journal of Audiology. [Rockville, MD]: American Speech-Language-Hearing Association, 1991.

Dyfyniad MLA

American Speech-Language-Hearing Association. American Journal of Audiology. American Speech-Language-Hearing Association, 1991.

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