Citazione Stile APA (7a Edizione)

Wills, A. J. (1967). An introduction to the history of Central Africa (2nd ed.). Oxford U.P.

Citazione stile Chigago Style (17a edizione)

Wills, A. J. An Introduction to the History of Central Africa. 2nd ed. London: Oxford U.P, 1967.

Citatione MLA (9a ed.)

Wills, A. J. An Introduction to the History of Central Africa. 2nd ed. Oxford U.P, 1967.