thanh tiếng Hán đến tám thanh Hán–Việt [From the four Middle Chinesetones to the eight Sino-Vietnamese tones]. Ngôn ngữ học và Tiếng Việt. [April 21, 2020]
297–313). HAL 00927222v2. Ferlus, Michel. (2009). What were the four Divisions of Middle Chinese? (页面存档备份,存于互联网档案馆). Diachronica, 26(2), 184-213. HAL 01581138v2
Series Press: 297–313. 2004. Ferlus, Michel. What were the four Divisions of Middle Chinese?. Diachronica. 2009, 26 (2): 184–213. A Vietnamese TV programme
thanh tiếng Hán đến tám thanh Hán–Việt [From the four Middle Chinesetones to the eight Sino-Vietnamese tones]. Ngôn ngữ học và Tiếng Việt. [April 21, 2020]
viet-muong. Mon-Khmer Studies 26. 7–28. Ferlus, Michel. 2004. The Origin of Tones in Viet-Muong. In Somsonge Burusphat (ed.), Papers from the Eleventh Annual