Helpman, E. (1978). A Theory of International Trade Under Uncertainty. ELSEVIER.
Čikaški stil citiranja (17. izdanje)Helpman, Elhanan. A Theory of International Trade Under Uncertainty. ELSEVIER, 1978.
MLA način citiranja (8. izdanje)Helpman, Elhanan. A Theory of International Trade Under Uncertainty. ELSEVIER, 1978.
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