Porphyrius 233-301 & Guthrie, K. S. (1988). Porphyry's launching-points to the realm of mind: An introduction to the neoplatonic philosophy of Plotinus. Phanes Press.
Chicago Style (17th ed.) CitationPorphyrius 233-301 and Kenneth Sylvan Guthrie. Porphyry's Launching-points to the Realm of Mind: An Introduction to the Neoplatonic Philosophy of Plotinus. Grand Rapids: Phanes Press, 1988.
MLA (9th ed.) CitationPorphyrius 233-301 and Kenneth Sylvan Guthrie. Porphyry's Launching-points to the Realm of Mind: An Introduction to the Neoplatonic Philosophy of Plotinus. Phanes Press, 1988.
Warning: These citations may not always be 100% accurate.