Siregar RGJ, Gultom JJ. Oral Interaction in English Classroom Using IRF Pattern between Teacher-Students at SMK Imelda Medan. TRANSFORM [Internet]. 2026 Jun. 30 [cited 2026 Sep. 26];15(2):56-69. Available from: https://jurnal.unimed.ac.id/2012/index.php/jelt/article/view/75637