Style de citation APA (7e éd.)

Okigbo, P. N. C. (1967). Africa and the Common Market. Northwestern University Press.

Style de citation Chicago (17e éd.)

Okigbo, P. N. C. Africa and the Common Market. Evanston: Northwestern University Press, 1967.

Style de citation MLA (8e éd.)

Okigbo, P. N. C. Africa and the Common Market. Northwestern University Press, 1967.