APA (7th ed.) Citation

Whetham, E. H., & Currie, J. I. (1971). The economics of African countries. Cambridge U.P..

Chicago Style (17th ed.) Citation

Whetham, E. H., and Jean I. Currie. The Economics of African Countries. London: Cambridge U.P., 1971.

MLA (9th ed.) Citation

Whetham, E. H., and Jean I. Currie. The Economics of African Countries. Cambridge U.P., 1971.