ปาลวัฒน์ ธ., and วัฒยากร ก. “MANAGEMENT FACTORS AFFECTING OIL SPILL PREVENTION FROM OIL TANKERS IN THAILAND”. NKRAFA Journal of Humanities and Social Sciences, vol. 5, Aug. 2017, pp. 5-14, https://so04.tci-thaijo.org/index.php/KANNICHA/article/view/137727.