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Sundawa, Sonny and Triyatnoko (2012) Billing System Di PDAM Tirta Darma Ayu Kab. Indramayu.
Sundawa, Sonny (2007) SISTEM INFORMASI PENJUALAN BARANG SECARA KREDIT DI KOPERASI PT. VONEX INDONESIA. Diploma thesis, Universitas Komputer Indonesia.