Shelly, G. B., & Rosenblatt, H. J. (2013). Systems analysis and design (Philippine edition.). Cengage Learning Asia Pte Ltd.
Lua i Stíl Chicago (17ú heag.)Shelly, Gary B., agus Harry J. Rosenblatt. Systems Analysis and Design. Philippine edition. Singapore: Cengage Learning Asia Pte Ltd, 2013.
Lua MLA (9ú heag.)Shelly, Gary B., agus Harry J. Rosenblatt. Systems Analysis and Design. Philippine edition. Cengage Learning Asia Pte Ltd, 2013.
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