Buzan, Barry. <br/><br/>
International systems in world history :  remaking the study of international relations / 
Barry Buzan and Richard Little. 
 - Oxford :  Oxford University Press,  2000. 
 - xvi, 452 p. :  ill., maps ;  25 cm. 
<br/><br/>Includes bibliographical references (p. [417]-439) and index. 
<br/><br/>
<br/><br/><label>ISBN: </label>0198780656  RM117.36 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International relations--Philosophy.<br/>Social systems.