Ogundele S, Abdul Kohar UH. EntrepreEntrepreneurship Knowledge, Challenges, and Sustainable Entrepreneurship Framework for Retirees: A Systematic Reviewneurship Knowledge, Challenges, and Sustainable Entrepreneurship Framework for Retirees: A Systematic Review: Introduction, Methodology, Result and Discussion, Discussion, and Conclusion. . IJIBS [Internet]. 2024 Dec. 31 [cited 2025 Apr. 26];19(2):1-21. Available from: https://ijibs.utm.my/index.php/ijibs/article/view/161