UGWUMBA, U. I. INTERNALLY GENERATED REVENUE (IGR) AND EFFECTIVENESS OF POLYTECHNIC ADMINISTRATION: FOCUS ON AKANU IBIAM FEDERAL POLYTECHNIC, UNWANA. The Melting Pot, [S. l.], v. 5, n. 1, 2019. Disponível em: https://journals.aphriapub.com/index.php/TMP/article/view/877. Acesso em: 29 mar. 2024.