Dyfyniad APA

Gastroenterology Review | Termedia Publishing House. Cambridge University Press.

Dyfyniad Arddull Chicago

Gastroenterology Review | Termedia Publishing House. Cambridge University Press.

Dyfyniad MLA

Gastroenterology Review | Termedia Publishing House. Cambridge University Press.

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