Risma Hesti Yuni Astuti, Suhendri Suhendri, and Veronica Indraswati. “Upaya Meningkatkan Kepercayaan Diri Siswa Kelas IX H Melalui Bimbingan Klasikal Model Problem Based Learning Di SMP Negeri 1 Semarang”. Educatio 19, no. 1 (June 23, 2024): 200–209. Accessed November 23, 2024. https://e-journal.hamzanwadi.ac.id/index.php/edc/article/view/25807.