Yang, E.-C., & González González, O. R. (2018). 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. Scholar: Human Sciences, 10(2), 305. Retrieved from http://www.assumptionjournal.au.edu/index.php/Scholar/article/view/2891