แก้วไธสง อ., วิเศษน้ำ ศ., ไชยช่วย ภ., and เนืองเฉลิม น. “Factors Associated With Health Check up of Food Handler in Muangsrikai Sub-District Municipality, Warinchamrab District, Ubonratchathani Province”. Journal of Ratchathani Innovative Health Sciences, vol. 1, no. 1, July 2017, pp. 64-78, https://he02.tci-thaijo.org/index.php/JRIHS/article/view/171153.