Abdullahi, Muhammad Mustapha, Nor Aznin Bt Abu Bakar, and Sallahuddin B. Hassan. 2016. “Debt Overhang Versus Crowding Out Effects: Understanding the Impact of External Debts on Capital Formation in Theory”. International Journal of Economics and Financial Issues 6 (1):271-78. https://econjournals.com/index.php/ijefi/article/view/1562.