Hoffer, J. A. (2002). Modern systems analysis and design. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Hoffer, Jeffrey A. Modern Systems Analysis and Design. Prentice Hall, 2002.
Lua MLA (8ú heag.)Hoffer, Jeffrey A. Modern Systems Analysis and Design. Prentice Hall, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.