คันธะด้วง ปิยะณัฐ. “Quality of True Wi-Fi Service: A Case Study of Customers in Bangkok”. Pathumthani University Academic Journal 11, no. 1 (June 14, 2019): 120–131. Accessed March 28, 2024. https://so05.tci-thaijo.org/index.php/ptujournal/article/view/183716.