APA引文

Whetham, E. H., & Currie, J. I. (1969). The Economics of African countries. London: Cambridge at the University Press.

Trích dẫn kiểu Chicago

Whetham, Edith H., và Jean I. Currie. The Economics of African Countries. London: Cambridge at the University Press, 1969.

MLA引文

Whetham, Edith H., và Jean I. Currie. The Economics of African Countries. London: Cambridge at the University Press, 1969.

警告：这些引文格式不一定是100％准确.