Dyfyniad APA

Language, Speech & Hearing Services in Schools. American Speech-Language-Hearing Association.

Dyfyniad Arddull Chicago

Language, Speech & Hearing Services in Schools. American Speech-Language-Hearing Association.

Dyfyniad MLA

Language, Speech & Hearing Services in Schools. American Speech-Language-Hearing Association.

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