APA (7th ed.) Zitazioa

(1968). Problems in African history. Prentice-Hall.

Chicago Style (17th ed.) Zitazioa

Problems in African History. Englewood Cliffs: Prentice-Hall, 1968.

MLA (9th ed.) Zitazioa

Problems in African History. Prentice-Hall, 1968.