Dilley, Laura C., and Christopher C. Heffner. “The Role of F0 Alignment in Distinguishing Intonation Categories: Evidence from American English ”. Journal of Speech Sciences 3, no. 1 (February 5, 2021): 3–67. Accessed April 19, 2024. https://econtents.bc.unicamp.br/inpec/index.php/joss/article/view/15039.