Varangis, P., Akiyama, T., & Thigpen, E. (1990). Recent developments in marketing and pricing systems for agricultural export commodities in Sub-Saharan Africa. International Economics Dept., World Bank.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিVarangis, Panos, Takamasa Akiyama, এবং Elton Thigpen. Recent Developments in Marketing and Pricing Systems for Agricultural Export Commodities in Sub-Saharan Africa. Washington, D.C: International Economics Dept., World Bank, 1990.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিVarangis, Panos, et al. Recent Developments in Marketing and Pricing Systems for Agricultural Export Commodities in Sub-Saharan Africa. International Economics Dept., World Bank, 1990.
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