Akiyama, T. (1994). Adding up problem: Strategies for primary commodity exports in Sub-Saharan Africa. World Bank, International Economics Department.
Čikaški stil citiranja (17. izdanje)Akiyama, Takamasa. Adding Up Problem: Strategies for Primary Commodity Exports in Sub-Saharan Africa. Washington, D.C: World Bank, International Economics Department, 1994.
MLA način citiranja (9. izdanje)Akiyama, Takamasa. Adding Up Problem: Strategies for Primary Commodity Exports in Sub-Saharan Africa. World Bank, International Economics Department, 1994.
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