Παραπομπή σε μορφή APA (7η εκδ.)

Northern Nigeria (Nigeria). Ministry of Economic Planning. (1964). Statistical yearbook. The Ministry.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Northern Nigeria (Nigeria). Ministry of Economic Planning. Statistical Yearbook. Kaduna, Nigeria: The Ministry, 1964.

Παραπομπή σε μορφή MLA (8th εκδ.)

Northern Nigeria (Nigeria). Ministry of Economic Planning. Statistical Yearbook. The Ministry, 1964.