Dyfyniad APA

ebrary, Inc, & Orlando, R. C. (2000). Gastroesophageal reflux disease. Dekker.

Dyfyniad Arddull Chicago

ebrary, Inc, and Roy C. Orlando. Gastroesophageal Reflux Disease. New York: Dekker, 2000.

Dyfyniad MLA

ebrary, Inc, and Roy C. Orlando. Gastroesophageal Reflux Disease. Dekker, 2000.

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