Putthiwanit, Chutinon, และ Pattama Suriyakul Na Ayudhya. 2024. “A Study of Customer Expectation Resulted from Merger and Acquisition Between Tot and Cat Telecom Company Limited”. Journal of Roi Kaensarn Academi 9 (3):196-204. https://so02.tci-thaijo.org/index.php/JRKSA/article/view/266519.