เภสัชพิพัฒน์กุล โสภา. “9 Subjects That the Applicant Must Understand before Entering the Exam Are Certified Internal Auditors”. RMUTL Journal of Business Administration and Liberal Arts 7, no. 2 (December 31, 2019): 1–6. Accessed May 2, 2024. https://so05.tci-thaijo.org/index.php/balajhss/article/view/218283.