Bwisa, H. M., A. W. Gichuhi, M. Omondi, and M. W. Mwangi. “The Relationship Between Opportunity Competence and Business Performance of Graduates With Physical Challenges in Kenya”. The International Journal of Business & Management, vol. 5, no. 3, Mar. 2017, https://internationaljournalcorner.com/index.php/theijbm/article/view/123459.