Jiang, Haisheng. “Do Mandarin-English Bilinguals Have an Accent in Their L1 Vowel Production?”. Canadian Acoustics 36, no. 3 (September 1, 2008): 132–133. Accessed May 15, 2026. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2073.