Budiharto RA, Rokhmawati D. Investigating Mother Tongue Effect In The Acquisition Of English Prepositions By Indonesia-Speaking Learners. JES [Internet]. 2025 May 6 [cited 2026 Oct. 1];7(1):95-109. Available from: https://jes.ejournal.unri.ac.id/index.php/JES/article/view/354