Khan, M. N. ., & Khokhar, I. . (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