Greene, J. (1992). The Export Performance of Sub-Saharan Africa, 1970-19+L69390: A Survey. International Monetary Fund.
Chicago Style aipamenaGreene, Joshua. The Export Performance of Sub-Saharan Africa, 1970-19+L69390: A Survey. Washington, D.C.: International Monetary Fund, 1992.
MLA aipamenaGreene, Joshua. The Export Performance of Sub-Saharan Africa, 1970-19+L69390: A Survey. International Monetary Fund, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.