Yuan, Jiahong, and Mark Liberman. “/L//Variation/in/American/English:/A/Corpus/Approach”. Journal of Speech Sciences 1, no. 2 (February 3, 2021): 35–46. Accessed May 18, 2024. https://econtents.bc.unicamp.br/inpec/index.php/joss/article/view/15025.