Rusmawaty, D., Limbong, E., Ahada, I., Hafizh, M.I.F. and Rahmatullah, A.N. 2024. Unlocking Phonological Proficiency: Exploring Allophonic Variation Using ELSA Speak App in Early Semester EFL Students at Mulawarman University. Indonesian Journal of EFL and Linguistics. 9, 2 (Nov. 2024), 337-348. DOI:https://doi.org/10.21462/ijefl.v9i2.828.