Surtiyem, Surtiyem, Lusi Nurhayati, and Yuyun Yulia. “sing rossword uzzle to ncrease Students’ ocabulary astery in unior igh chool”. Journal of Science and Education (JSE) 6, no. 2 (February 23, 2026): 1528-1539. ccessed October 7, 2026. https://jse.rezkimedia.org/index.php/jse/article/view/766.