(1990). The economic effects of significant U.S. import restraints, phase II: Agricultural products and natural resources. Washington,D.C: United States International Trade Commission.
استشهاد بنمط شيكاغوThe Economic Effects of Significant U.S. Import Restraints, Phase II: Agricultural Products and Natural Resources. Washington,D.C: United States International Trade Commission, 1990.
MLA استشهادThe Economic Effects of Significant U.S. Import Restraints, Phase II: Agricultural Products and Natural Resources. Washington,D.C: United States International Trade Commission, 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.