Duangchinda, A., B. Anurugsa, and N. Hungspreug. “The Use of Organophosphate and Carbamate Pesticides on Paddy Fields and Cholinesterase Levels of Farmers in Sam Chuk District, Suphan Buri Province, Thailand”. Science & Technology Asia, vol. 19, no. 1, Mar. 2014, pp. 39-51, https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/17076.