Utumber Singh, Jasmeet Kaur A/P, et al. “Language Identity: Variability in Phonology in Different Races in Malaysia”. AJELP: Asian Journal of English Language and Pedagogy, vol. 2, Dec. 2014, pp. 74-82, https://ejournal.upsi.edu.my/index.php/AJELP/article/view/1101.