Lindsey, Geoff, and Allen Hirson. “Variable Robustness of Nonstandard R in English: Evidence from Accent Disguise”. International Journal of Speech, Language and the Law 6, no. 2 (August 7, 1999): 278–289. Accessed November 24, 2024. https://journal.equinoxpub.com/IJSLL/article/view/6565.