APA (7e ed.) Bronvermelding

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.

Chicago (17e ed.) Bronvermelding

Varangis, Panos, Takamasa Akiyama, en 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.

MLA (9e ed.) Bronvermelding

Varangis, Panos, et al. Recent Developments in Marketing and Pricing Systems for Agricultural Export Commodities in Sub-Saharan Africa. International Economics Dept., World Bank, 1990.