Erwu, Yi, Sutida Howattanakul, และ Somsak Chanphong. 2023. “Teaching Quality Management of Private Children`S Fine Arts Education Institutions in Heilongjiang Province”. Journal of Roi Kaensarn Academi 8 (8):606-20. https://so02.tci-thaijo.org/index.php/JRKSA/article/view/262600.