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Dyfyniad Arddull ChicagoStamper, Robert L. Becker-Shaffer's Diagnosis and Therapy of the Glaucomas. New York: Elsevier, 2009.
Dyfyniad MLAStamper, Robert L. Becker-Shaffer's Diagnosis and Therapy of the Glaucomas. New York: Elsevier, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.