yesfu, t. m. (1962). manpower and economic development in nigeria. the institute of national planning.
Cita Chicago (17th ed.)yesfu, t. m. Manpower and Economic Development in Nigeria. cairo: the institute of national planning, 1962.
Cita MLA (9th ed.)yesfu, t. m. Manpower and Economic Development in Nigeria. the institute of national planning, 1962.
Atenció: Aquestes cites poden no estar 100% correctes.