Husin, A. and Sutikno 2023. The Effectiveness of Understanding of Indonesian Vocabulary and Grammar Vocabulary on the Ability to Write Narrative Texts for Grade VI Students of SD Negeri 143 Barbaran, Mandailing Natal Regency Academic Year 2022-2023. International Journal of Social Sciences and Humanities Invention. 10, 03 (Mar. 2023), 7789–7794. DOI:https://doi.org/10.18535/ijsshi/v10i03.05.