APA (7th ed.) Citation

Onyemelukwe, J. O. C., & Filani, M. O. (1983). Economic geography of West Africa. Longman.

Chicago Style (17th ed.) Citation

Onyemelukwe, J. O. C., and M. O. Filani. Economic Geography of West Africa. London ; New York: Longman, 1983.

MLA (9th ed.) Citation

Onyemelukwe, J. O. C., and M. O. Filani. Economic Geography of West Africa. Longman, 1983.