Pratama, A. ., Erma Purwanti, S. ., & Yeni, M. . (2021). THE FACTORS OF STUDENTS’ SILENCE IN THE ENGLISH SPEAKING CLASSROOM PERFORMANCE AT ELEVENTH GRADE OF SMKN 1 TEMBILAHAN. J-Shelves of Indragiri (JSI), 2(2), 55–67. https://doi.org/10.32520/jsi.v2i2.1556