Cioara,Jeremy  <br/><br/>
CCNA Voice  Official Exam Certification Guide 
Jeremy Cioara, Michael J. Cavanaugh and Kris A. Krake 
 - rev.ed 
 - Indianapolis  Cisco Press  2009 
 - xxvii,577p.:  ill. 
<br/><br/><label>ISBN: </label>9781587202070 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Computer science
<br/><br/><label>Dewey Class. No.: </label>000.01 CIO