Valacich, Joseph S.  <br/><br/>
Essentials of systems analysis and design /  
Joseph S. Valacich, Joey F. George, Jeffrey A. Hoffer 
 - 4th ed.  
 - New Jersey :   Pearson Education,   2009 
 - 459p. :   ill. ;   28cm.   
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>9780135069844 013506984X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>System design.<br/>System analysis