Cita APA (7th ed.)

Harder, R. (1956). Plotins schriften. Felix Meiner.

Cita Chicago (17th ed.)

Harder, Richard. Plotins Schriften. Hamburgo: Felix Meiner, 1956.

Cita MLA (9th ed.)

Harder, Richard. Plotins Schriften. Felix Meiner, 1956.