Twidell, John and Weir, Tony. <br/><br/>
Renewable energy resources / 
John Twidell and Tony Weir. 
 - 3rd ed. 
 - New York :  Routledge,  c2015. 
 - xxxi, 784 p. :  ill. ;  24 cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780415584388 
<br/><br/><label>LC Class. No.: </label>19806 
<br/><br/><label>Dewey Class. No.: </label>621.042