USDA & Economic research service. (2001). The road ahead agricultural policy reform in the WTO summery report: Agriculture economic report number 797.
Chicago-referens (17:e uppl.)USDA och Economic research service. The Road Ahead Agricultural Policy Reform in the WTO Summery Report: Agriculture Economic Report Number 797. 2001.
MLA-referens (9:e uppl.)USDA och Economic research service. The Road Ahead Agricultural Policy Reform in the WTO Summery Report: Agriculture Economic Report Number 797. 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.