RAMADHAN, I. Analisis Dan Perancangan Sistem Pembayaran Jasa Internet Berbasis Web Dan SMS Gateway. SYSTEMATICS, Karawang, Indonesia, v. 1, n. 1, p. 1–11, 2019. DOI: 10.35706/sys.v1i1.1976. Disponível em: https://journal.unsika.ac.id/systematics/article/view/1976. Acesso em: 5 nov. 2024.