Yang E-C, González González OR. A Comparative Study of Grades 9-12 Students’ Perceptions of Teaching Effectiveness in Music Class According to Gender, Years of Enrollment, and Music Instrument Played at The American School of Bangkok, Green Valley Campus. scho [Internet]. 2018Dec.27 [cited 2024May3];10(2):305. Available from: http://www.assumptionjournal.au.edu/index.php/Scholar/article/view/2891