Dake, Patrisius, Rozita Yusniaty Lodo, and Agnes O. Manek. 2026. “Improving English Vocabulary Mastery Through Duolingo Application For Grade 5 At SD Inpres Kayu Putih”. Jurnal Penelitian Ilmu Pendidikan Indonesia 5 (1):840-45. https://doi.org/10.31004/jpion.v5i1.900.