Fitzgerald, Jerry <br/><br/>
Business data communications and networking 
Jerry Fitzgerald, Alan Dennis 
 - Seventh Edition 
 - Singapore:  John Wiley & Sons,  2002 
 - xiv, 457 pages;  24 cm. 
<br/><br/><label>ISBN: </label>047139100 
<br/><br/><label>LC Class. No.: </label>TK5105  / F577 2002