Kacaribu, Leli Tripena br, Fiber Yun A Ginting, and Anna Stasya Prima Sari. 2020. “IMPROVING THE ELEVENTH GRADE STUDENTS’ SPEAKING SKILL BY USING AUDIO VISUAL AIDS IN SMA SANTO PETRUS MEDAN IN THE ACADEMIC YEAR OF 2018/2019”. Kairos English Language Teaching Journal 3 (3):146-57. https://doi.org/10.54367/kairos.v3i3.838.