Dyfyniad APA

(1991). OECD in figures. Tokyo: Organisation for Economic Co-operation and Development.

Dyfyniad Arddull Chicago

OECD in Figures. Tokyo: Organisation for Economic Co-operation and Development, 1991.

Dyfyniad MLA

OECD in Figures. Tokyo: Organisation for Economic Co-operation and Development, 1991.

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