Carolin Panjaitan, David Berthony Manalu, and Siska Anggita Situmeang. “Using Scramble Game To Develop English Vocabulary Of Grade Seven Students At SMP Negeri 1 Pematangsiantar”. Jurnal Ilmu Pendidikan Dan Sosial, vol. 2, no. 3, Oct. 2023, pp. 319-28, doi:10.58540/jipsi.v2i3.435.