Hawryszkiewycz, I. T. (1991). Introduction to systems analysis and design: I. T. Hawryszkiewycz (2nd ed.). Prentice Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHawryszkiewycz, I. T. Introduction to Systems Analysis and Design: I. T. Hawryszkiewycz. 2nd ed. New York: Prentice Hall, 1991.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHawryszkiewycz, I. T. Introduction to Systems Analysis and Design: I. T. Hawryszkiewycz. 2nd ed. Prentice Hall, 1991.
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