Manalu, E. S., Rika, R. and Siregar, T. M. S. B. (2020) “SPEAKING CLASSROOM INTERACTION BASED ON INITIATION-RESPONSE-FEEDBACK (IRF) MODEL FOR GRADE VIII AT SMP NEGERI 16 MEDAN”, TRANSFORM : Journal of English Language Teaching and Learning. North Sumatera, Indonesia, 8(1). doi: 10.24114/tj.v8i1.19638.