Sawyer, W. C., & Sprinkle, R. L. (2003). International economics. Prentice-Hall of India.
Tohutoru Kātū Chicago (17th ed.)Sawyer, W. Charles, me Richard L. Sprinkle. International Economics. New Delhi: Prentice-Hall of India, 2003.
Tohutoro MLA (9th ed.)Sawyer, W. Charles, me Richard L. Sprinkle. International Economics. Prentice-Hall of India, 2003.
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