Seth, Ronald. <br/><br/>
Encyclopedia of espionage. 

 - New York :  Doubleday,  1974,c1972. 
 - 718 p. 
<br/><br/><label>ISBN: </label>0385016093 
<br/><br/><label>LCCN: </label>76131105 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Espionage--Dictionaries.<br/>Spies.
<br/><br/><label>Dewey Class. No.: </label>327.12