Enlace Permanente
https://oailib.unej.ac.id/vufind/Record/0%20%1Fnhttp:__psmk.kemdikbud.go.id_konten_3684_maintenance-practice-xi-4
https://oailib.unej.ac.id/vufind/Record/0%20%1Fnhttp:__psmk.kemdikbud.go.id_konten_3684_maintenance-practice-xi-4