Puntuwan, Sunantha, and Wannaporn Srisukontarat. “The Situation and Factors Affecting on Communication in Hazardous Substances Law”. Thai Food and Drug Journal 27, no. 1 (March 18, 2020): 53–69. Accessed May 4, 2024. https://he01.tci-thaijo.org/index.php/fdajournal/article/view/240482.