Hamzah, A. Hadian Pratama, Abdul Hamid, and Nurhasanah Nurhasanah. “Penerapan ISO 14001:2015 Pada Institusi Pendidikan Pondok Pesantren: (Studi Kasus Di Pondok Pesantren X Yogyakarta) ”. Jurnal Simki Economic 6, no. 2 (April 12, 2023): 311-321. Accessed November 22, 2024. https://jiped.org/index.php/JSE/article/view/330.