อาชะวะบูล ภ. ., and คุปตัษเฐียร ณ. . “Defect Reduction in Injection Process of Printer’s Parts Using the Design of Experiment (DOE) Technique”. Journal of Engineering, RMUTT, vol. 2, Dec. 2012, pp. 23-32, https://ph01.tci-thaijo.org/index.php/jermutt/article/view/242118.