จึงสมาน ท. . ., and อัศวแสงรัตน์ พ. . “Synthesis Activated Carbon from Coffee Residue by Using Microwave Radiation”. Engineering and Technology Horizons, vol. 33, no. 1, June 2020, pp. 36-41, https://ph01.tci-thaijo.org/index.php/lej/article/view/241306.