Pornrattananukul, A., Zhu, M. and Wang, J. (2011) “Effects of the Similarity in Categorization of Chinese and Thai Tones on Chinese Tone Perception by Thai Learners”, Journal of Sinology (วารสารจีนวิทยา), 5, pp. 171–190. available at: https://so16.tci-thaijo.org/index.php/JSINO/article/view/2800 (accessed: 2 October 2026).