Παραπομπή APA
Richardson, D. J. (1980). Understanding international economics: Theory and practice /$cJ. David Richardson. Boston: Little, Brown.
Παραπομπή Chicago StyleRichardson, David J. Understanding International Economics: Theory and Practice /$cJ. David Richardson. Boston: Little, Brown, 1980.
Παραπομπή MLARichardson, David J. Understanding International Economics: Theory and Practice /$cJ. David Richardson. Boston: Little, Brown, 1980.
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