NATASYA HERZA HARAHAP; MARYATI SALMIAH. “Ispeak” an Application to Improve student’s speaking competencies. RETORIKA: Jurnal Ilmu Bahasa, [S. l.], v. 10, n. 3, p. 704–712, 2024. DOI: 10.22225/jr.10.3.2024.704-712. Disponível em: https://www.ejournal.warmadewa.ac.id/index.php/jret/article/view/10305. Acesso em: 16 jan. 2026.