Usman, Abdullateef, and Abdul Wahab Egbewole. “Public Private Partnership and the Development of Osun State Nigeria: Issues and Options”. Journal of Asian Scientific Research 1, no. 5 (September 1, 2011): 220–228. Accessed July 3, 2024. https://archive.aessweb.com/index.php/5003/article/view/3290.