Cita APA (7th ed.)

Post, K. (1968). The new States of West Africa (Rev. ed.). Penguin Books.

Cita Chicago (17th ed.)

Post, Ken. The New States of West Africa. Rev. ed. Harmondsworth: Penguin Books, 1968.

Cita MLA (8th ed.)

Post, Ken. The New States of West Africa. Rev. ed. Penguin Books, 1968.