APA (7th ed.) Citation

Okigbo, P. N. C. (1989). National development planning in Nigeria: 1900 - 92 (1. publ.). Currey [u.a.].

Chicago Style (17th ed.) Citation

Okigbo, Pius Nwabufo C. National Development Planning in Nigeria: 1900 - 92. 1. publ. London [u.a.]: Currey [u.a.], 1989.

MLA (9th ed.) Citation

Okigbo, Pius Nwabufo C. National Development Planning in Nigeria: 1900 - 92. 1. publ. Currey [u.a.], 1989.