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Dyfyniad Arddull ChicagoBailey, Byron J. Head and Neck Surgery-otolaryngology. 3rd ed. Philadelphia: Lippincott Williams & Wilkins, 2001.
Dyfyniad MLABailey, Byron J. Head and Neck Surgery-otolaryngology. 3rd ed. Lippincott Williams & Wilkins, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.