Tungdamnernsawad, Supaporn, Phiphu Phongsuwan, Sukhum Chaleysub, and Siroj Polpuntin. “Service Marketing Mix for Private Schools”. Mahachula Academic Journal 7, no. 1 (March 5, 2020): 18–36. Accessed April 20, 2024. https://so04.tci-thaijo.org/index.php/JMA/article/view/239908.