Cita APA (7a ed.)

Armstrong, A. H. (1959). An introduction to ancient philosophy (3rd ed.). Methuen.

Cita Chicago Style (17a ed.)

Armstrong, Arthur Hilary. An Introduction to Ancient Philosophy. 3rd ed. London: Methuen, 1959.

Cita MLA (9a ed.)

Armstrong, Arthur Hilary. An Introduction to Ancient Philosophy. 3rd ed. Methuen, 1959.