Maharani, R. and Irawan, H. 2018. DESAIN SISTEM INFORMASI PENJUALAN TRADING POLYURETHANE FOAM BERORIENTASI OBJEK STUDI KASUS: PT. TUGU MAS ABADI. IDEALIS : InDonEsiA journaL Information System. 1, 1 (Mar. 2018), 50-56.