Xiao, T., and C. . Yodwised. “Using the Popular Vocal Performance Guidebook for Extra Classes to Improve Student Academic Performance in Sichuan Normal University”. Asia Pacific Journal of Religions and Cultures, vol. 6, no. 1, May 2022, pp. 137-4, https://so06.tci-thaijo.org/index.php/ajrc/article/view/256547.