APA način citiranja (7. izdanje)
Organisation for Economic Co-operation and Development & ProQuest (Firm). (2008). Belgium. OECD.
Čikaški stil citiranja (17. izdanje)
Organisation for Economic Co-operation and Development i ProQuest (Firm). Belgium. Paris: OECD, 2008.
MLA način citiranja (9. izdanje)
Organisation for Economic Co-operation and Development i ProQuest (Firm). Belgium. OECD, 2008.
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