Dyfyniad APA

Organisation for Economic Co-operation and Development. (1980). Spain: 1980. OECD Publishing.

Dyfyniad Arddull Chicago

Organisation for Economic Co-operation and Development. Spain: 1980. Paris: OECD Publishing, 1980.

Dyfyniad MLA

Organisation for Economic Co-operation and Development. Spain: 1980. OECD Publishing, 1980.

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