Dyfyniad APA

American Association of Orthodontists. American Journal of Orthodontics & Dentofacial Orthopedics.

Dyfyniad Arddull Chicago

American Association of Orthodontists. American Journal of Orthodontics & Dentofacial Orthopedics.

Dyfyniad MLA

American Association of Orthodontists. American Journal of Orthodontics & Dentofacial Orthopedics.

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