ศิลวัฒนาวงศ์ ชมพูนุท. “The Need of Adult Students in Studying Piano: A Case Study KPN Music Academy”. Rangsit Music Journal 11, no. 2 (June 3, 2018): 37–48. Accessed May 7, 2024. https://so06.tci-thaijo.org/index.php/rmj/article/view/126859.