Tamba, D. W. ., Pardede, R. M. P. ., Lubis, H. T. ., Gea, E. C. Y. ., Siahaan, R. C. ., Herman, H., Purba, A., & Tannuary, A. (2023). Socialization on Improving English Language Skills through TOEFL for Grade 12 Students of SMK Swasta HKBP Pematang Siantar . IKHLAS: Jurnal Pengabdian Dosen Dan Mahasiswa, 2(3), 28–32. https://doi.org/10.58707/ikhlas.v2i3.680