Cita APA (7th ed.)
Guthrie, K. S. (1896). The philosophy of Plotinos.
Cita Chicago (17th ed.)
Guthrie, Kenneth Sylvan. The Philosophy of Plotinos. Philadelphia, 1896.
Cita MLA (9th ed.)
Guthrie, Kenneth Sylvan. The Philosophy of Plotinos. 1896.
Atenció: Aquestes cites poden no estar 100% correctes.