Robkob, A. “Excellence Audit Professionalism and Audit Credibility: An Empirical Investigation of Tax Auditors in Thailand”. RMUTL Journal of Business Administration and Liberal Arts, vol. 6, no. 1, May 2018, pp. 72-84, https://so05.tci-thaijo.org/index.php/balajhss/article/view/125986.