Haag, Stephen. <br/><br/>
Information systems essentials / 
Stephen Haag, Maeve Cummings. 
 - 3rd ed. 
 - Boston :  Irwin/McGraw-Hill,  2009. 
 - xxix, 429 p. 
<br/><br/><label>ISBN: </label>0071285490 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Management information systems.<br/>Information technology.
<br/><br/><label>LC Class. No.: </label>T58.6  / .H33 2009