mailariani, devi, and dian anubhakti. “ANALISA SISTEM TEKNOLOGI INFORMASI PEMBELIAN DAN PENJUALAN BERBASIS OBJECT ORIENTED PADA PT. SMIPTEC ADHITAMA GEMILANG”. IDEALIS : InDonEsiA journaL Information System 2, no. 5 (September 2, 2019): 486–491. Accessed March 12, 2025. https://jom.fti.budiluhur.ac.id/IDEALIS/article/view/2649.