Akiyama, T. (1994). Adding up problem: Strategies for primary commodity exports in Sub-Saharan Africa. World Bank, International Economics Department.
Chicago-referens (17:e uppl.)Akiyama, Takamasa. Adding Up Problem: Strategies for Primary Commodity Exports in Sub-Saharan Africa. Washington, D.C: World Bank, International Economics Department, 1994.
MLA-referens (9:e uppl.)Akiyama, Takamasa. Adding Up Problem: Strategies for Primary Commodity Exports in Sub-Saharan Africa. World Bank, International Economics Department, 1994.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.