Okeya, I. O., O. C. Awoniyi, M. O. OKE, and A. T. Ogundele. “Financial Leverage and Performance of Bank and Non-Bank Firms in Nigeria”. The International Journal of Business & Management, vol. 8, no. 5, May 2020, doi:10.24940/theijbm/2020/v8/i5/BM2005-068.