Understanding operating systems / 
McHoes, Ann McIver; Flynn, Ida M. 
 - 7th ed. 
 - USA :  Cengage Learning,  2014. 
 - xvii, 572 p.: ill.; 23 cm. 
<br/><br/>Includes appendices, glossary, bibliography, and index 
<br/><br/><label>ISBN: </label>9781285096551 
<br/><br/><label>Dewey Class. No.: </label>C 005.43 Mc478 2014