APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (8:e uppl.)

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