โอภาสบุตร อ, กอมณี ส, หกสุวรรณ พ. The Development of Training Package on Counterfeit Gold Checking for Gold Shop Staffs. Education MCU [internet]. 2019 Aug. 21 [cited 2026 Sep. 1];6(2):167-7. available from: https://so02.tci-thaijo.org/index.php/EDMCU/article/view/192708