Knutsen, Torbjorn L <br/><br/>
A History of International Relations Theory 
Knutsen, Torbjorn L 
 - 2nd 
 - Manchester  Manchester University Press  1992 
 - 354p. 
<br/><br/><label>ISBN: </label>071904930X 
<br/><br/><label>Source: </label>Textbook