McCullough, John. “Tree Bahk or 3.0 Bark: Linguistic Identity and the Sociophonetic Variation of Rhotics in Gullah Geechee”. Proceedings of the Linguistic Society of America, vol. 7, no. 1, May 2022, p. 5275, https://doi.org/10.3765/plsa.v7i1.5275.