Shelly, G. B., Cashman, T. J., & Rosenblatt, H. J. (2010). Systems analysis and design (8th ed.). Course Technology/Cengage Learning.
Lua i Stíl Chicago (17ú heag.)Shelly, Gary B., Thomas J. Cashman, agus Harry J. Rosenblatt. Systems Analysis and Design. 8th ed. Australia: Course Technology/Cengage Learning, 2010.
Lua MLA (9ú heag.)Shelly, Gary B., et al. Systems Analysis and Design. 8th ed. Course Technology/Cengage Learning, 2010.
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