Encyclopedia  , Britinica  <br/><br/>
The New Encyclopaedia Britannica:macropaedia  

 - 15th 
 -  1998 
 - 928 
<br/><br/><label>ISBN: </label>0-85229-633-0 
<br/><br/><label>Subjects--Personal Names: </label><br/>Humanity & Natural Sciences
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humanities and Natural sciences