DENI SAPTA NUGRAHA. MENINGKATKAT KETERAMPILAN BERBICARA MELALUI KEGIATAN INFORMATION GAP PADA TARUNA PLLU STPI CURUG. Langit Biru: Jurnal Ilmiah Aviasi, indonesia, v. 9, n. 1, p. 31–50, 2020. DOI: 10.54147/langitbiru.v9i1.76. Disponível em: https://jurnal.overthinkingku.com/index.php/jurnal-ilmiah-aviasi/article/view/76. Acesso em: 9 may. 2026.