APA (7th ed.) Citation

Armstrong, A. H. (1981). An introduction to ancient philosophy. Littlefield, Adams.

Chicago Style (17th ed.) Citation

Armstrong, A. H. An Introduction to Ancient Philosophy. United States: Littlefield, Adams, 1981.

MLA (8th ed.) Citation

Armstrong, A. H. An Introduction to Ancient Philosophy. Littlefield, Adams, 1981.

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