Organisation for Economic Co-operation and Development & ProQuest (Firm). (2011). Improving lower secondary schools in Norway, 2011. OECD.
Chicago-referens (17:e uppl.)Organisation for Economic Co-operation and Development och ProQuest (Firm). Improving Lower Secondary Schools in Norway, 2011. [Paris]: OECD, 2011.
MLA-referens (9:e uppl.)Organisation for Economic Co-operation and Development och ProQuest (Firm). Improving Lower Secondary Schools in Norway, 2011. OECD, 2011.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.