Mohammed Abdulaziz Ajayi J, Mallam Fali I, Bulus Iganus R, Simon U. Alternative Sources of Internally Generated Revenue and its Usefulness to the Finance and Development of University of Maiduguri, Nigeria. gijmss [Internet]. 2021May11 [cited 2026Jul.5];4(1):16. Available from: https://www.gijmss.com.ng/index.php/gijmss/article/view/25