Gregory, P. R., & Stuart, R. C. (1999). Comparative economic systems (6th ed.). Boston: Houghton Mifflin.
Čikaški stil citiranjaGregory, Paul R., i Robert C. Stuart. Comparative Economic Systems. 6th ed. Boston: Houghton Mifflin, 1999.
MLA način citiranjaGregory, Paul R., i Robert C. Stuart. Comparative Economic Systems. 6th ed. Boston: Houghton Mifflin, 1999.
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