Changpueng, P., and F. Pattanapichet. “An Analysis of English in the Workplace: The Needs of Engineers in Writing in English”. Humanities, Arts and Social Sciences Studies, vol. 15, no. 3, Dec. 2015, pp. 151-76, https://so02.tci-thaijo.org/index.php/hasss/article/view/44676.