APA (7th ed.) Citation

Plotinus & Armstrong, A. H. (1953). Plotinus. Allen & Unwin.

Chicago Style (17th ed.) Citation

Plotinus and A. H. Armstrong. Plotinus. London: Allen & Unwin, 1953.

MLA (9th ed.) Citation

Plotinus and A. H. Armstrong. Plotinus. Allen & Unwin, 1953.

Warning: These citations may not always be 100% accurate.