Risma Hesti Yuni Astuti, Suhendri S, Indraswati V. Upaya Meningkatkan Kepercayaan Diri Siswa Kelas IX H Melalui Bimbingan Klasikal Model Problem Based Learning Di SMP Negeri 1 Semarang. Edc [Internet]. 2024 Jun. 23 [cited 2024 Nov. 21];19(1):200-9. Available from: https://e-journal.hamzanwadi.ac.id/index.php/edc/article/view/25807