APA (7th ed.) Citation

Duncan-Jones, A. (1952). Butler's moral philosophy (1. publ.). Penguin.

Chicago Style (17th ed.) Citation

Duncan-Jones, Austin. Butler's Moral Philosophy. 1. publ. Harmondsworth u.a: Penguin, 1952.

MLA (9th ed.) Citation

Duncan-Jones, Austin. Butler's Moral Philosophy. 1. publ. Penguin, 1952.