WHITTEN, J., BENTLEY, L. D., & HO, T. I. (1986). Systems analysis design methods. Times Mirror/Mosby College Pub.
Lua i Stíl Chicago (17ú heag.)WHITTEN, Jeffrey, Lonnie D. BENTLEY, agus Thomas I.M HO. Systems Analysis Design Methods. St. Louis: Times Mirror/Mosby College Pub, 1986.
Lua MLA (9ú heag.)WHITTEN, Jeffrey, et al. Systems Analysis Design Methods. Times Mirror/Mosby College Pub, 1986.
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