KENDALL, K. E., & KENDALL, J. E. (1998). Systems analysis and design.-- Ed.4. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)KENDALL, Kenneth E., agus Julie E. KENDALL. Systems Analysis and Design.-- Ed.4. New Jersey: Prentice Hall, 1998.
Lua MLA (9ú heag.)KENDALL, Kenneth E., agus Julie E. KENDALL. Systems Analysis and Design.-- Ed.4. Prentice Hall, 1998.
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