B. R. S. Z. BERKAT, Yasminar Amaerita Telaumbanua, Adieli Laoli, S.Pd., M.Pd, and Afore Tahir Harefa, “The Analysis Of Using Duolingo Application Towards Students’ Vocabulary Development At The Tenth Grade Of SMK Negeri 1 Bawolato: English”, Jour. English. Dev, vol. 5, no. 2, pp. 427–434, Aug. 2025.