Dyfyniad APA

IATUL Annual Conference Proceedings. IATUL Board.

Dyfyniad Arddull Chicago

IATUL Annual Conference Proceedings. IATUL Board.

Dyfyniad MLA

IATUL Annual Conference Proceedings. IATUL Board.

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