Navanugraha, B., and R. Wangchormchai. “Insecticide Residues Surveying of Field Duck Meat in Uttaradit Province”. RMUTL Journal of Business Administration and Liberal Arts, vol. 5, no. 2, June 2017, pp. 40-56, https://so05.tci-thaijo.org/index.php/balajhss/article/view/94742.