Organisation for Economic Co-operation and Development. (1992). Poland: 1992. OECD Publishing.
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Dyfyniad Arddull Chicago
Organisation for Economic Co-operation and Development. Poland: 1992. Paris: OECD Publishing, 1992.
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Dyfyniad MLA
Organisation for Economic Co-operation and Development. Poland: 1992. OECD Publishing, 1992.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.