Tuvadaratragool, S. “Could Profitability, Efficiency, and Financial Leverage Signal Return on Equity: An Application of DuPont Analysis in Thailand Setting?”. Rajapark Journal, vol. 16, no. 44, Feb. 2022, pp. 73-88, https://so05.tci-thaijo.org/index.php/RJPJ/article/view/255397.