Cita APA (7a ed.)

Armstrong, A. H. (1953). Plotinus (1st published.). George Allen & Unwin.

Cita Chicago Style (17a ed.)

Armstrong, Arthur Hilary. Plotinus. 1st published. London: George Allen & Unwin, 1953.

Cita MLA (9a ed.)

Armstrong, Arthur Hilary. Plotinus. 1st published. George Allen & Unwin, 1953.