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Citra Julivera Nainggolan, Christian Neni Purba and Melda Veby Ristella Munthe 2023. The Effect Of Crossword Puzzle Game On Students’ Vocabulary Mastery At Grade Eight Of SMP GKPS 3 Pematang Siantar. Jurnal Ilmu Pendidikan dan Sosial. 2, 4 (Nov. 2023), 502–512. DOI:https://doi.org/10.58540/jipsi.v2i4.465.