“118. Improving 10th Grade Students’ Writing Skills through Problem Based Learning and Wepik in SMK 4 Semarang”, psnppg, vol. 1, no. 1, pp. 1080–1090, Jul. 2023, Accessed: Aug. 11, 2026. Available: https://conference.upgris.ac.id/index.php/psnppg/article/view/4055