Crayton, Christopher A. <br/><br/>
The A+ Exams Guide  : preparation guide for the comptia essentials, 220-602, 220-603, and 220-604 exams 
Christopher A. Crayton 
 - 2nd ed. 
 - Boston  Cengage learning  2008 
 - xiv, 640 p.  24 cm. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>9781584505662 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer technicians certification; electronic technicians certification united states-examinations; telecommunications engineers certification
<br/><br/><label>Dewey Class. No.: </label>004.076  / CRA