Stallings, William <br/><br/>
Data and computer communications 2nd ed 

 - 2nd ed 
 - Macmillan Publishing Company, New York  1985 
 - xvii,653 
<br/><br/><label>ISBN: </label>0-02-946440-4 
<br/><br/><label>Dewey Class. No.: </label>001.64404 Sta