KUSUMANINGSIH, Citra. Penggunaan Communicative Group Activity dalam Meningkatkan Kemampuan Speaking Skill. Edukasi: Jurnal Pendidikan, Indonesia, ID, v. 14, n. 1, p. 24–39, 2016. DOI: 10.31571/edukasi.v14i1.283. Disponível em: https://journal.upgripnk.ac.id/index.php/edukasi/article/view/283. Acesso em: 14 may. 2026.