Shelly, G. B., & Cashman, T. J. (1991). Systems analysis and design. Boyd & Fraser.
Chicago Style (17th ed.) ZitazioaShelly, Gary B., eta Thomas J. Cashman. Systems Analysis and Design. Boston: Boyd & Fraser, 1991.
MLA (9th ed.) ZitazioaShelly, Gary B., eta Thomas J. Cashman. Systems Analysis and Design. Boyd & Fraser, 1991.
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