Dyfyniad APA

OECD Observer. Organisation for Economic Cooperation & Development.

Dyfyniad Arddull Chicago

OECD Observer. Organisation for Economic Cooperation & Development.

Dyfyniad MLA

OECD Observer. Organisation for Economic Cooperation & Development.

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