http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
v. 1. Porphyry on the life of Plotinus and the order of his books; Ennead I -- v. 2. Ennead II -- v. 3. Ennead III -- v. 4. Ennead IV -- v. 5. Ennead V. -- v. 6. Enneads VI, 1-5 -- v. 7. Enneads VI.--6-9.
with an English translation by A. H. Armstrong.
The Greek text is essentially that of P. Henry and H. R. Schwyzer.