Merry Susanty Br Tarigan, Nava Arbina Br Sembiring, & Grace Martha Elvriani Purba. (2024). An Analysis of Students’ Vocabulary Mastery at SMP Gajah Mada Medan. International Journal of Integrative Sciences, 3(1), 17–36. https://doi.org/10.55927/ijis.v3i1.7600