APA (7e ed.) Bronvermelding

Organisation for Economic Co-operation and Development & ProQuest (Firm). (2012). United States, 2012. OECD.

Chicago (17e ed.) Bronvermelding

Organisation for Economic Co-operation and Development en ProQuest (Firm). United States, 2012. Paris: OECD, 2012.

MLA (9e ed.) Bronvermelding

Organisation for Economic Co-operation and Development en ProQuest (Firm). United States, 2012. OECD, 2012.

Let op: Deze citaties zijn niet altijd 100% accuraat.