Thanabordeekij, Pithoon, Suchat Promkutkeo, and Deuntemduang Na-Chiengmai. 2021. “Identifying the Gaps between Customer Expectations and Perceptions on Service Quality Dimensions of ABC Mobile Operator”. Journal of ASEAN PLUS Studies 2 (1):45-53. https://so06.tci-thaijo.org/index.php/aseanplus/article/view/248535.