Aramyok, Tianchai. “Model of Organization Management to Excellence for Affiliated Petrochemical Industry, PTT Public Company Limited”. Journal of Innovation and Management 6, no. 1 (June 25, 2021): 86–99. Accessed May 14, 2024. https://so03.tci-thaijo.org/index.php/journalcim/article/view/247048.