Fauzi, Ahmad, Yatim Riyanto, and Nunuk Hariyati. “Cultural Legitimacy, Tiered Quality Structures, and Digital Traceability: Operationalizing the PPEPP Cycle for SDG 4 in Pesantren-Affiliated Higher Education”. Journal of Current Studies in SDGs 3, no. 4 (December 27, 2027): 331. Accessed October 3, 2026. https://journal.i-ros.org/index.php/JOCSIS/article/view/331.