Wangcharoendate, S. “Internal Audit Outsourcing and Sustainable Audit Success: An Empirical Investigation of Listed Companies in The Stock Exchange of Thailand”. University of the Thai Chamber of Commerce Journal Humanities and Social Sciences, vol. 35, no. 1, Jan. 2018, pp. 1-21, https://so06.tci-thaijo.org/index.php/utccjournalhs/article/view/187899.