Phengtha, P., Wongkhamchan, K., & Kaenampornpan, P. (2023). The Development of Trombone Practical Skill Instructional Package for the Beginners Based on Dalcroze Approach. Journal of Education Rajabhat Maha Sarakham University, 20(2), 137–148. retrieved from https://so06.tci-thaijo.org/index.php/edu-rmu/article/view/263186