Angkasa, Zuber, Erfan M Kamil, Reny Kartika Sary, and Meldo Andi Jaya. 2025. “From Pesantren Towards Ecopesantren: Sustainability Index Assessment and Improvement Recommendations”. Arsir 9 (AIP). Indonesia:195-210. https://ojs.um-palembang.ac.id/index.php/arsir/article/view/590.