Abubakar, Ahmadu. “Financial Leverage and Financial Performance of Oil and Gas Companies in Nigeria: A Re-Examination”. Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 3 (April 11, 2021): 4170–4180. Accessed May 4, 2024. https://turcomat.org/index.php/turkbilmat/article/view/1708.