Klinsuntorn, Nanthana, Tuangporn Kemthong, and Pricha Mapradid. “QuEChERS Sample Preparation for Determination of Steroids Adulterated in Herbal Pills by High Performance Liquid Chromatography”. Thai Food and Drug Journal 21, no. 1 (August 7, 2018): 59–66. Accessed May 1, 2024. https://he01.tci-thaijo.org/index.php/fdajournal/article/view/138798.