UNPIKUL, B.; DHINNABUTRA, B. Application of Lean Office and Process Engineering to Improve the Productivity of a Labor Skills Certificate Management System: A Case Study of a National Labor Skills Testing Center. Journal of Manufacturing & Management Technology, [S. l.], v. 5, n. 1, p. 19–33, 2026. Disponível em: https://ph01.tci-thaijo.org/index.php/jMMT/article/view/267293. Acesso em: 16 sep. 2026.