Plotinus..
Porphyry on Plotinus ; Ennead. Volume I.. /
with an English translation by A.H. Armstrong 
. - Cambridge ; London  : Harvard University Press,  1995 
. - XXXIX, 325 p.  17 cm. 
 - ((The Loeb classical library ; 440) )
<br/><label>  ISBN: </label>0-674-99484-1