Dao Thi Thu, Trang. “The Impact of Internal Training on Labor Productivity: The Case for 10 Largest Industrial Zones in Vietnam”. RESEARCH REVIEW International Journal of Multidisciplinary 9, no. 11 (November 20, 2024): 135–145. Accessed June 24, 2026. https://old1.rrjournals.com/index.php/rrijm/article/view/1632.