Malau, K.B., Rahmadhani, M. and 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 (Apr. 2023), 2313-2317. DOI:https://doi.org/10.54371/jiip.v6i4.1852.