Chuaysakun, W. ., and T. . Thawornsujaritkul. “Safety Management in Workplace for Operational Level Employees of Petrochemicals Industries in the Eastern Economic Corridor (EEC) Zone”. Journal of Industrial Business Administration, vol. 4, no. 1, June 2022, pp. 60-73, https://so03.tci-thaijo.org/index.php/iba/article/view/261997.