Trích dẫn APA

(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.

Trích dẫn kiểu Chicago

The Economic Effects of Significant U.S. Import Restraints, Phase II: Agricultural Products and Natural Resources. Washington,D.C: United States International Trade Commission, 1990.

Trích dẫn MLA

The Economic Effects of Significant U.S. Import Restraints, Phase II: Agricultural Products and Natural Resources. Washington,D.C: United States International Trade Commission, 1990.

Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.