Situmorang, Romasta, Viator Lumban Raja, and Fiber Yun Almanda Ginting. 2020. “TEACHING VOCABULARY BY USING SUBSTITUTION AND CUED RESPONSE DRILLS TECHNIQUE TO THE EIGHTH GRADE STUDENTS OF SMP NEGERI 41 MEDAN”. Kairos English Language Teaching Journal 3 (1):19-26. https://doi.org/10.54367/kairos.v3i1.827.