Igar Hawrysz Kiewycz, . (2005). System Analysis & Design. New York: Prentice Hall.
Igar Hawrysz Kiewycz, . 2005. System Analysis & Design. New York: Prentice Hall.
Igar Hawrysz Kiewycz, . System Analysis & Design. New York: Prentice Hall. 2005.
