Prabrat, S. “FACTORS INFLUENCING THE ORGANIZATION OF HAPPY WORKPLACE OF CANNED FOOD IN SONGKHLA PROVINCE: Happy Workplace, Manufacture Industrial , Songkhla Province”. Life Sciences and Environment Journal, vol. 20, no. 1, Jan. 2019, pp. 30-38, https://ph01.tci-thaijo.org/index.php/psru/article/view/127822.