Stallings, William <br/><br/>
Data and computer communications / 
William Stallings 
 - 7th ed. 
 - Upper Saddle River, NJ :  Prentice Hall,  2004 
 - xvi, 847 p. :  ill. (some col.) ;  23 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0131006819 9780131833111 (International ed.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems<br/>Computer networks