Dyfyniad APA

(1989). OECD in figures 1989. [Paris]: The OECD Observer (Organisation for Economic Co-operation and Development. OECD observer.).

Dyfyniad Arddull Chicago

OECD in Figures 1989. [Paris]: The OECD Observer (Organisation for Economic Co-operation and Development. OECD observer.), 1989.

Dyfyniad MLA

OECD in Figures 1989. [Paris]: The OECD Observer (Organisation for Economic Co-operation and Development. OECD observer.), 1989.

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