Platón, 427 A. C.-347 A. C. <br/><br/>
The dialogues of Plato 

 - 22 
 -  hicago, Il.:  Encyclopaedia Britannica, Inc. 
 - 54 v. 
 - Great Books of the Western World; vol. 7 .
<br/><br/><label>ISBN: </label>0-85229-163-9