Hufbauer, G. C. (1986). Trade protection in the United States: 31 case studies. Washington: Institute for international economics.
استشهاد بنمط شيكاغوHufbauer, Gary Clyde. Trade Protection in the United States: 31 Case Studies. Washington: Institute for international economics, 1986.
MLA استشهادHufbauer, Gary Clyde. Trade Protection in the United States: 31 Case Studies. Washington: Institute for international economics, 1986.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.