IPNUGRAHA, Ipnugraha. Penerapan Sistem Manajemen Mutu ISO 9001:2008 di SMK N 2 Pengasih Kulon Progo. Jurnal Ilmiah Guru Caraka Olah Pikir Edukatif, [S. l.], v. 15, n. 01, 2015. DOI: 10.21831/jig cope.v15i01.5039. Disponível em: https://jurnal.uny.ac.id/index.php/cope/article/view/5039. Acesso em: 14 may. 2025.