WHATSAPP GROUP AND GOOGLE CLASSROOM-BASED LEARNING MATERIALS IN ENGLISH CLASSES: STUDENTS’ PERCEPTIONS: (Study Case taken from College of Vocational Studies – IPB University). Seltics Journal: Scope of English Language Teaching Literature and Linguistics, [S. l.], v. 3, n. 1, p. 47–54, 2020. DOI: 10.46918/seltics.v3i1.552. Disponível em: http://ejournals.umma.ac.id/index.php/seltics/article/view/552. Acesso em: 7 oct. 2025.