FitzGerald, Jerry. <br/><br/>
Business data communications and networking / 
Jerry FitzGerald, Alan Dennis. 
 - 6th ed. 
 - New York :  John Wiley & Sons,  1998. 
 - xx, 491 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0471237981 
<br/><br/><label>LCCN: </label>98-018875 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.<br/>Computer networks.<br/>Office practice--Automation.