Shelly, G. B., Cashman, T. J., & Rosenblatt , H. J. Systems Analysis and Design (4th ed.).
Lua i Stíl Chicago (17ú heag.)Shelly, Gary B., Thomas J. Cashman, agus Harry J. Rosenblatt. Systems Analysis and Design. 4th ed. THOMSON.
Lua MLA (9ú heag.)Shelly, Gary B., et al. Systems Analysis and Design. 4th ed.
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