Whetham, E. H., & Currie, J. I. (1969). The Economics of African countries. London: Cambridge at the University Press.
Dyfyniad Arddull ChicagoWhetham, Edith H., và Jean I. Currie. The Economics of African Countries. London: Cambridge at the University Press, 1969.
Dyfyniad MLAWhetham, Edith H., và Jean I. Currie. The Economics of African Countries. London: Cambridge at the University Press, 1969.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.