Daniel J.O Siringoringo et al. 2023. The Effect of Scrabble Game on Students’ Vocabulary Mastery of Grade Eight at SMP Negeri 12 Pematang Siantar. Jurnal Ilmu Pendidikan dan Sosial. 2, 3 (Oct. 2023), 345–357. DOI:https://doi.org/10.58540/jipsi.v2i3.441.