APA (7th ed.) Citation

Markusen, J. R., & Melvin, J. R. (1988). The theory of international trade. Harper & Row.

Chicago Style (17th ed.) Citation

Markusen, James R., and James R. Melvin. The Theory of International Trade. New York [u.a.]: Harper & Row, 1988.

MLA (9th ed.) Citation

Markusen, James R., and James R. Melvin. The Theory of International Trade. Harper & Row, 1988.