APA aipamena

 Langer, A. M. (2008).  Analysis and design of information systems.  Springer.

Chicago Style aipamena

 Langer, Arthur M.  Analysis and Design of Information Systems.  Springer, 2008.

MLA aipamena

 Langer, Arthur M.  Analysis and Design of Information Systems.  Springer, 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.