Stephenson, S. (2000). Services trade in the western hemisphere. Organisation of American States.
Chicagoスタイル(17版)引用形式Stephenson, Sherry. Services Trade in the Western Hemisphere. Washington, D. C: Organisation of American States, 2000.
MLA(9版)引用形式Stephenson, Sherry. Services Trade in the Western Hemisphere. Organisation of American States, 2000.
警告: この引用は必ずしも正確ではありません.