Cita APA (7th ed.)

Helpman, E. (1978). A Theory of International Trade Under Uncertainty. ELSEVIER.

Cita Chicago (17th ed.)

Helpman, Elhanan. A Theory of International Trade Under Uncertainty. ELSEVIER, 1978.

Cita MLA (8th ed.)

Helpman, Elhanan. A Theory of International Trade Under Uncertainty. ELSEVIER, 1978.

Atenció: Aquestes cites poden no estar 100% correctes.