Shelly, G. B., Cashman, T. J., & Rosenblatt, H. J. (2008). Systems analysis and design (7th ed.). Thomson.
Lua i Stíl Chicago (17ú heag.)Shelly, Gary B., Thomas J. Cashman, agus Harry J. Rosenblatt. Systems Analysis and Design. 7th ed. Australia: Thomson, 2008.
Lua MLA (9ú heag.)Shelly, Gary B., et al. Systems Analysis and Design. 7th ed. Thomson, 2008.
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