Principles of information Systems :  A managerial approach / 
Stair, Ralph M., Reynolds George W. 
 - 5th ed. 
 - Australia :  Course Technology ,  2001. 
 - xxiv,616,:  col,ill.; 
<br/><br/><label>ISBN: </label>0619033576 
<br/><br/><label>LC Class. No.: </label>T58.6  / .S82  2001