William Stallings <br/><br/>
Business data communications :  infrastructure, networking and security / 
William Stallings, Thomas Case 
 - 7th ed. 
 - Boston, MA :  Pearson,  c2013 
 - xx, 599 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780133023893 0133023893 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business--Data processing<br/>Business--Communication systems--Data processing<br/>Local area networks (Computer networks)<br/>Data transmission systems<br/>Business enterprises--Computer networks