Dyfyniad APA

Augmentative and Alternative Communication. Cambridge University Press.

Dyfyniad Arddull Chicago

Augmentative and Alternative Communication. Cambridge University Press.

Dyfyniad MLA

Augmentative and Alternative Communication. Cambridge University Press.

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