รุ่งสวรรค์โพธิ์ ด. (2019) “Inflf luence of Customer Relationship Management and Entrepreneurial Leadership on the Performance of Eldercare Services Business”, Business Administration and Management Journal Review, 11(1), pp. 68–84. available at: https://so01.tci-thaijo.org/index.php/bahcuojs/article/view/198251 (accessed: 27 August 2026).