Purwo, Purwo, and Sri Hartutik. “Peningkatan Kualitas Mengajar Guru Melalui Pembinaan Model Up Grading Learning”. PTK: Jurnal Tindakan Kelas 3, no. 2 (May 21, 2023): 228–238. Accessed April 19, 2024. https://jurnal.ciptamediaharmoni.id/index.php/ptk/article/view/203.