APA (7th ed.) Citation

Armstrong, A. H. (1966). An introduction to ancient philosophy ([4th ed.].). Methuen.

Chicago Style (17th ed.) Citation

Armstrong, A. H. An Introduction to Ancient Philosophy. [4th ed.]. London: Methuen, 1966.

MLA (9th ed.) Citation

Armstrong, A. H. An Introduction to Ancient Philosophy. [4th ed.]. Methuen, 1966.

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