Williams, Brian K. <br/><br/>
Using Information technology:  A practical introduction to computers and communications/ 
Brian K. Williams and Stacey C. Sawyer. 
 - 11th. edition. 
 - New York:  McGraw-Hill,  2015. 
 - 588 p.: 
<br/><br/><label>ISBN: </label>9781259255663 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication systems.<br/>Information technology.
<br/><br/><label>LC Class. No.: </label>QA76.5  / WIL 2015