Dyfyniad APA

Journal of Speech & Hearing Research. American Speech-Language-Hearing Association.

Dyfyniad Arddull Chicago

Journal of Speech & Hearing Research. American Speech-Language-Hearing Association.

Dyfyniad MLA

Journal of Speech & Hearing Research. American Speech-Language-Hearing Association.

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