Varongsinghara, Eakachai, Khatachai Khoontanasinchai, Supadaech Chanjaradwichai, and Pisit Phokharatkul. 2017. “The manufacture monitoring system base on SPC rules”. Asia-Pacific Journal of Science and Technology 13 (3):329-34. https://so01.tci-thaijo.org/index.php/APST/article/view/83059.