KACARIBU, L. T. br; GINTING, F. Y. A.; SARI, A. S. P. 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, [S. l.], v. 3, n. 3, p. 146–157, 2020. DOI: 10.54367/kairos.v3i3.838. Disponível em: https://ejournal.ust.ac.id/index.php/KAIROS/article/view/838. Acesso em: 3 jul. 2024.