Zwiebach, Barton   <br/><br/>
A first course in string theory 
by Barton, Zwiebach 
 - 2nd ed. 
 - Cambridge  Cambridge University Press  2009 
 - xxii, 673p. 
<br/><br/><label>ISBN: </label>9780521176330 
<br/><br/><label>Dewey Class. No.: </label>530.142  / P09; 8(ECE)