Saputra EC. Efektifitas Layanan Informasi Dalam Pencegahan Bullying di SMK Negeri 1 Panjatan Kabupaten Kulon Progo DI Yogyakarta. CE [Internet]. 2022 Sep. 27 [cited 2025 Sep. 13];3(2):62-7. Available from: https://pusdikra-publishing.com/index.php/josr/article/view/871