“EFFECT OF USING TONGUE TWISTER ON STUDENTS’ VOWEL PRONUNCIATION SKILLS AT UNIVERSITAS MUHAMMADIYAH BULUKUMBA; INDONESIAN VILLAGE LEARNER CONTEXT” (2023) EXPOSURE : JURNAL PENDIDIKAN BAHASA INGGRIS, 12(2), pp. 339–350. doi:10.26618/exposure.v12i2.12762.