Duangkaew, Wattanaporn, Orapin Piyasakulkiat, and Pakorn Priyakorn. “Digital technology affecting photocopying service quality”. KASEM BUNDIT JOURNAL 27, no. 1 (June 10, 2026): 17–35. accessed October 14, 2026. https://so04.tci-thaijo.org/index.php/jkbu/article/view/277653.