Essentials of systems analysis and design / 
Valacich, Joseph S., George, Joey F., Hoffer, Jeffrey A. 
 - 6th ed. 
 - England :  Pearson Education Limited,  2015. 
 - 444 p.: col. Ill.; 27.5 cm. 
<br/><br/>Includes bibliography, appendices and  glossary  
<br/><br/><label>ISBN: </label>9781292076614 
<br/><br/><label>Dewey Class. No.: </label>C 003 V135 2012