Manalu ES, Rika R, Siregar TMSB. SPEAKING CLASSROOM INTERACTION BASED ON INITIATION-RESPONSE-FEEDBACK (IRF) MODEL FOR GRADE VIII AT SMP NEGERI 16 MEDAN. TRANSFORM [Internet]. 2020 Aug. 26 [cited 2025 Jul. 3];8(1). Available from: https://jurnal.unimed.ac.id/2012/index.php/jelt/article/view/19638