Kheang, S. and Ratana-ubol, A. (2014) “Proposed Guidelines for Organizing Non-Formal Education to Enhance Career Development for Unskilled Workers in The Kingdom of Cambodia”, Journal of Education Studies, Chulalongkorn University. Bangkok, Thailand, 42, pp. 1–17. available at: https://so02.tci-thaijo.org/index.php/EDUCU/article/view/26456 (accessed: 3 October 2026).