Stallings,William <br/><br/>
Data and Computer Communications 

 - 7th ed. 
 - Singapore  Pearson Education  2004 
 - xvi,847 p. 
<br/><br/> Includes appendex ,References&Index 
<br/><br/><label>ISBN: </label>81-297-0206-1 
<br/><br/><label>Dewey Class. No.: </label>S/C-S/T D65,4:(D65,8(B)) P4;1