Shelly, Gary B. <br/><br/>
Business data communications: introductory concepts and techniques 

 - 3rd ed. 
 - Singapore  Thomson Asia  2003 
 - various pagination   
<br/><br/>   
<br/><br/><label>ISBN: </label>981-243-110-1 
<br/><br/><label>ISSN: </label>
<br/><br/><label>Subjects--Index Terms: </label>Data communication 
<br/><br/><label>Dewey Class. No.: </label>658:004.7