World Trade Organization. (2009). WTO agreements series: Agriculture. World Trade Organization.
Cita Chicago (17th ed.)World Trade Organization. WTO Agreements Series: Agriculture. Geneve: World Trade Organization, 2009.
Cita MLA (9th ed.)World Trade Organization. WTO Agreements Series: Agriculture. World Trade Organization, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.