Hawryszkiewycz, I. (2001). Introduction systems analysis and designIgor Hawryszkiewycz. Prentice Hall.
Chicago-viite (17. p.)Hawryszkiewycz, Igor. Introduction Systems Analysis and DesignIgor Hawryszkiewycz. Prentice Hall, 2001.
MLA-viite (8. p.)Hawryszkiewycz, Igor. Introduction Systems Analysis and DesignIgor Hawryszkiewycz. Prentice Hall, 2001.
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