Ana Pawestrin, Anselmus Yata Mones, and Maria Margaretha Dwilinda. “Peningkatan Hasil Belajar Peserta Didik Kelas X SMA Stella Duce 1 Yogyakarta Pada Materi Suara Hati Melalui Model Pembelajaran Problem Based Learning”. PROSIDING SEMINAR NASIONAL PENDIDIKAN DAN AGAMA 5, no. 2 (October 4, 2024): 459–473. Accessed December 22, 2024. https://badanpenerbit.org/index.php/SEMNASPA/article/view/2136.