Citra Julivera Nainggolan, Christian Neni Purba, Melda Veby Ristella Munthe. The Effect Of Crossword Puzzle Game On Students’ Vocabulary Mastery At Grade Eight Of SMP GKPS 3 Pematang Siantar. JIPSI [Internet]. 2023 Nov. 21 [cited 2026 Apr. 17];2(4):502-1. Available from: https://putrapublisher.org/ojs/index.php/jipsi/article/view/465