ธัญญรัตนวานิช จิดาภา. “Leadership and Business Ethics Related to the Operation of Small and Medium-Sized Enterprises in Nonthaburi Province”. Journal of Humanities and Social Sciences, Rajapruk University 5, no. 1 (May 29, 2019): 90–103. Accessed April 19, 2024. https://so03.tci-thaijo.org/index.php/rpu/article/view/191555.