APA
Valacich, . (2005). Essentials of Systems Analysis and Design. New Delhi: PHI.
Chicago
Valacich, . 2005. Essentials of Systems Analysis and Design. New Delhi: PHI.
Harvard
Valacich, . (2005). Essentials of Systems Analysis and Design. New Delhi: PHI.
MLA
Valacich, . Essentials of Systems Analysis and Design. New Delhi: PHI. 2005.