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Gaya APA
Siahaan, D.(2012).Analisa Kebutuhan Dalam Rekayasa Perangkat Lunak .Indonesia:Andi Yogyakarta.
Gaya MLA
Siahaan, Daniel."Analisa Kebutuhan Dalam Rekayasa Perangkat Lunak".Indonesia:Andi Yogyakarta,2012.Text.