Cita APA

 Valacich, J. S. (2015).  Essentials of systems analysis and design.  Pearson Educational Limited.

Chicago Style Citation

 Valacich, Joseph S.  Essentials of Systems Analysis and Design.  Pearson Educational Limited, 2015.

Cita MLA

 Valacich, Joseph S.  Essentials of Systems Analysis and Design.  Pearson Educational Limited, 2015.

Atenció: Aquestes cites poden no estar 100% correctes.