APA (7th ed.) Citation

Paton, H. J. (1967). The categorical imperative: A study in Kant's moral philosophy. Harper Torchbooks.

Chicago Style (17th ed.) Citation

Paton, Herbert James. The Categorical Imperative: A Study in Kant's Moral Philosophy. New York [etc.]: Harper Torchbooks, 1967.

MLA (9th ed.) Citation

Paton, Herbert James. The Categorical Imperative: A Study in Kant's Moral Philosophy. Harper Torchbooks, 1967.