LEE, B. (1985). Introducing Systems Analysis And Design Barry Lee. John Wiley & Sons.
Chicago Style aipamenaLEE, Barry. Introducing Systems Analysis And Design Barry Lee. John Wiley & Sons, 1985.
MLA aipamenaLEE, Barry. Introducing Systems Analysis And Design Barry Lee. John Wiley & Sons, 1985.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.