Malau, K. B., Rahmadhani, M., & Suprayetno, E. (2023). The Use of The Round-Robin Technique on Students’ Vocabulary Mastery for The Second Graders of SMK Al Maksum Langkat. JIIP - Jurnal Ilmiah Ilmu Pendidikan, 6(4), 2313-2317. https://doi.org/10.54371/jiip.v6i4.1852