Yanderm, S. (2014). Development of Learning Outcome with Problem Solving Teaching Method for Undergraduate Students of Faculty of Fine Arts, Srinakharinwirot University, in Music Theory Course, Interval Chapter. Fine Arts Journal: Srinakharinwirot University, 18(1), 23–30. Retrieved from https://so01.tci-thaijo.org/index.php/jfofa/article/view/92976