Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Markusen, James R., y James R. Melvin. The Theory of International Trade. Cambridge, Mass. [etc.]: Harper & Row, 1988.

Cita MLA (9a ed.)

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