PURWANDONO, E. .; FERNANDO, A. . Analisis Sistem Informasi Surat Masuk Surat Keluar Pada Pt J&T Express. Jurnal Sains dan Teknologi, [S. l.], v. 5, n. 1, p. 413–415, 2023. DOI: 10.55338/saintek.v5i1.1387. Disponível em: https://ejournal.sisfokomtek.org/index.php/saintek/article/view/1387. Acesso em: 14 may. 2026.