Organisation for Economic Co-operation and Development & ProQuest (Firm). (2005). OECD environmental performance reviews: United States. OECD.
Chicago-referens (17:e uppl.)Organisation for Economic Co-operation and Development och ProQuest (Firm). OECD Environmental Performance Reviews: United States. Paris: OECD, 2005.
MLA-referens (9:e uppl.)Organisation for Economic Co-operation and Development och ProQuest (Firm). OECD Environmental Performance Reviews: United States. OECD, 2005.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.