Friska Simatupang, Dwi Puspitosari and Lestari Batubara (2026) “Improving Students’ Vocabulary Skills Using Word Wall Media in Grade Seventh Students at SMP Negeri 2 Wamena”, Jurnal Pustaka Cendekia Hukum dan Ilmu Sosial, 3(3), pp. 807–826. doi: 10.70292/pchukumsosial.v3i3.235.