Avison, D., & FITZGERALD, G. (2006). Information systems development methodologies, techniques & tools / David Avison. MC GRAW HILL.
Lua i Stíl Chicago (17ú heag.)Avison, David, agus Guy FITZGERALD. Information Systems Development Methodologies, Techniques & Tools / David Avison. MC GRAW HILL, 2006.
Lua MLA (8ú heag.)Avison, David, agus Guy FITZGERALD. Information Systems Development Methodologies, Techniques & Tools / David Avison. MC GRAW HILL, 2006.
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