Ramadea, Nabela, Arso Setyadi, and Mulyani. 2023. “98. Improving Students’ Writing Skills in Exposition Text through Problem-Based Learning and Outlining at SMAN 6 Semarang”. Prosiding Seminar Nasional Pendidikan Profesi Guru 1 (1):897-907. https://conference.upgris.ac.id/index.php/psnppg/article/view/4036.