Siahaan, Sanggam, Mungkap Mangapul Siahaan, and Dian Winda Tamba. “The Effect of Crossword Puzzle Game Teaching Media to the Vocabulary Mastery of Seventh Grade Students of SMP Negeri 2 Siantar”. TOFEDU: The Future of Education Journal 3, no. 5 (December 3, 2024): 1171–1177. Accessed July 12, 2025. https://journal.tofedu.or.id/index.php/journal/article/view/194.