SETIAWAN, H. THE USE OF GROUP INVESTIGATION TECHNIQUE IN IMPROVING STUDENTS’ SPEAKING SKILL AT TRIDINANTI UNIVERSITY OF PALEMBANG. Edukasi Lingua Sastra, Indonesia, v. 16, n. 1, p. 91–99, 2018. DOI: 10.47637/elsa.v16i1.88. Disponível em: https://jurnal.umko.ac.id/index.php/elsa/article/view/88. Acesso em: 3 may. 2024.