Kamonrat, A. ., and T. . Phunsapphaisan. “The Development of Mandarin Chinese Speaking Skills through Role Play Activities Based on Active Learning of Grade 5 Students at Srikird Municipality School 1”. Journal of Sinology (วารสารจีนวิทยา), vol. 12, Aug. 2018, pp. 196-11, https://so16.tci-thaijo.org/index.php/JSINO/article/view/2920.