Valacich, J. S. (2021). Modern systems analysis and design (Ninth edition.). Pearson Education.
Chicago Style aipamenaValacich, Joseph S. Modern Systems Analysis and Design. Ninth edition. United Kingdom: Pearson Education, 2021.
MLA aipamenaValacich, Joseph S. Modern Systems Analysis and Design. Ninth edition. Pearson Education, 2021.
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