Dyfyniad APA

Bell's Palsy (2018). National Institute of Neurological Disorders & Stroke.

Dyfyniad Arddull Chicago

Bell's Palsy (2018). National Institute of Neurological Disorders & Stroke.

Dyfyniad MLA

Bell's Palsy (2018). National Institute of Neurological Disorders & Stroke.

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