“Design of Online Certificate Legalisation Information System at Indramayu State Polytechnic”. Antivirus : Jurnal Ilmiah Teknik Informatika 17, no. 2 (December 2, 2023): 261–270. Accessed January 9, 2026. https://ejournal.unisbablitar.ac.id/index.php/antivirus/article/view/3253.