Citazione Stile APA (7a Edizione)

Organisation for Economic Co-operation and Development & ProQuest (Firm). (2009). OECD regions at a glance 2009. OECD.

Citazione stile Chigago Style (17a edizione)

Organisation for Economic Co-operation and Development e ProQuest (Firm). OECD Regions at a Glance 2009. Paris: OECD, 2009.

Citatione MLA (9a ed.)

Organisation for Economic Co-operation and Development e ProQuest (Firm). OECD Regions at a Glance 2009. OECD, 2009.