APA (7th ed.) Citation

Okongwu, O. (1969). The frontier problems of West Africa today.

Chicago Style (17th ed.) Citation

Okongwu, Obi. The Frontier Problems of West Africa Today. Tübingen, 1969.

MLA (9th ed.) Citation

Okongwu, Obi. The Frontier Problems of West Africa Today. 1969.

Warning: These citations may not always be 100% accurate.