Yanderm, Sitsake. “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, no. 1 (June 1, 2014): 23–30. Accessed May 4, 2024. https://so01.tci-thaijo.org/index.php/jfofa/article/view/92976.