Dyfyniad APA

American Association of Orthodontists. Supplement to the American Journal of Orthodontics & Dentofacial Orthodontics.

Dyfyniad Arddull Chicago

American Association of Orthodontists. Supplement to the American Journal of Orthodontics & Dentofacial Orthodontics.

Dyfyniad MLA

American Association of Orthodontists. Supplement to the American Journal of Orthodontics & Dentofacial Orthodontics.

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