Sapsirin, S. (2016) “Self-Assessment of Business English Writing Ability of Thai University Students: Criterion-Related Validity and Gender Differences”, NIDA Journal of Language and Communication. Bangkok, Thailand, 19(22), pp. 77–91. available at: https://so04.tci-thaijo.org/index.php/NJLC/article/view/46952 (accessed: 24 September 2026).