Internal Quality Assurance in Vocational Education: A Virtual Observation Study of PPEPP-Based SPMI Implementation at SMK Telkom Malang. IEC: Journal of Educational Innovation, [S. l.], v. 2, n. 5, p. 33–48, 2026. Disponível em: https://research.iecjournal.com/index.php/IEC-JEI/article/view/145.. Acesso em: 8 nov. 2026.