PRAMADHANA, D.; FEBRIANTI, K. A.; FARISMANA, R.; GHOZALI, A. L. Design of Online Certificate Legalisation Information System at Indramayu State Polytechnic. Antivirus : Jurnal Ilmiah Teknik Informatika, v. 17, n. 2, p. 261-270, 2 Dec. 2023.