Abeywardana, N. L. E., and Y. K. W. Banda. “Impact of Observable Determinants and Unobservable Effect on Capital Structure: Evidence from Quoted Public Manufacturing Companies in Sri Lanka”. The International Journal of Business & Management, vol. 3, no. 6, June 2015, https://www.internationaljournalcorner.com/index.php/theijbm/article/view/128323.