Cita APA

United States General Accounting Office. (2001). International Trade: Comparison of U.S. and European Union Preference Programs. [S. L.]: GAO.

Citación estilo Chicago

United States General Accounting Office. International Trade: Comparison of U.S. and European Union Preference Programs. [S. L.]: GAO, 2001.

Cita MLA

United States General Accounting Office. International Trade: Comparison of U.S. and European Union Preference Programs. [S. L.]: GAO, 2001.