Situmorang, Sondang Sari. “Peningkatan Kemampuan Siswa Dalam Menulis Descriptive Text Melalui Model Pembelajaran Problem Based Learning Pada Siswa Kelas VII SMP Negeri 1 Tambusai”. Journal of Innovative and Creativity (Joecy) 4, no. 1 (January 27, 2024): 28–38. Accessed October 11, 2026. https://joecy.org/index.php/joecy/article/view/64.