O'Brien, James A. <br/><br/>
Introduction to information systems. 

 - 7th ed. 
 - USA :  Irwin,  1994. 
 - xxii, 483 p. :  23 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0256156190 9780256156195 
<br/><br/><label>Dewey Class. No.: </label>658.05 BRI