Iliya Haruna Vongjen, Dr. Anthony Ihuoma, and Dr. Chris AC-Ogbonna. “Impact of 2013 Tariff Billing Reforms on Economic Efficiency in Bwari Area Council of the Federal Capital Territory (FCT) Abuja”. International Journal of Research in Social Science and Humanities (IJRSS) ISSN:2582-6220, DOI: 10.47505/IJRSS, vol. 6, no. 1, Jan. 2025, pp. 212-27, doi:10.47505/IJRSS.2025.1.15.