Organisation for Economic Co-operation and Development. (1981). OECD economic surveys: Belgium-Luxembourg. Organisation for Economic Co-Operation and Development.
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Chicago Style (17th ed.) Zitazioa
Organisation for Economic Co-operation and Development. OECD Economic Surveys: Belgium-Luxembourg. Paris, France: Organisation for Economic Co-Operation and Development, 1981.
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MLA (9th ed.) Zitazioa
Organisation for Economic Co-operation and Development. OECD Economic Surveys: Belgium-Luxembourg. Organisation for Economic Co-Operation and Development, 1981.
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Kontuz: berrikusi erreferentzia hauek erabili aurretik.