Jayadi, Agus. “Efektivitas Model Pembelajaran Problem Based Learning Dalam Meningkatkan Kemampuan Menulis Teks Eksposisi Siswa SMA”. Journal of Language Studies, vol. 1, no. 1, July 2025, pp. 01-08, https://ejournal.kalibra.or.id/index.php/jols/article/view/27.