Khan, Muhammad Nauman, and Imran Khokhar. 2015. “The Effect of Selected Financial Ratios on Profitability: An Empirical Analysis of Listed Firms of Cement Sector in Saudi Arabia”. Quarterly Journal of Econometrics Research 1 (1):1-12. https://doi.org/10.18488/journal.88/2015.1.1/88.1.1.12.