Citazione Stile APA (7a Edizione)

Onwubiko, K. B. C. (1985). History of West Africa: School certificate (2. ed., rev. and enlarged, 2. repr.). Africana Publ. Ltd.

Citazione stile Chigago Style (17a edizione)

Onwubiko, K. B. C. History of West Africa: School Certificate. 2. ed., rev. and enlarged, 2. repr. Onitsha: Africana Publ. Ltd, 1985.

Citatione MLA (9a ed.)

Onwubiko, K. B. C. History of West Africa: School Certificate. 2. ed., rev. and enlarged, 2. repr. Africana Publ. Ltd, 1985.