รุ่งสวรรค์โพธิ์ดวงสมร. “Inflf Luence of Customer Relationship Management and Entrepreneurial Leadership on the Performance of Eldercare Services Business”. Business Review Journal 11, no. 1 (June 27, 2019): 68-84. Accessed June 3, 2020. https://so01.tci-thaijo.org/index.php/bahcuojs/article/view/198251.