Fauzi, A.; Riyanto, Y. .; Hariyati, N. Cultural Legitimacy, Tiered Quality Structures, and Digital Traceability: Operationalizing the PPEPP Cycle for SDG 4 in Pesantren-Affiliated Higher Education. J. Curr. Stud. SDGs 2027, 3 (4), 331. https://doi.org/10.63230/jocsis.3.4.331.