APA استشهاد

Langer, A. M. (2008). Analysis and design of information systems (3rd ed.). Springer - Verlag.

استشهاد بنمط شيكاغو

Langer, Arthur M. Analysis and Design of Information Systems. 3rd ed. London: Springer - Verlag, 2008.

MLA استشهاد

Langer, Arthur M. Analysis and Design of Information Systems. 3rd ed. Springer - Verlag, 2008.