APA (7th ed.) Citation

Hudson, W. D. (1973). The is-ought question: A collection of papers on the central problem in moral philosophy (Repr.). Macmillan.

Chicago Style (17th ed.) Citation

Hudson, W. D. The Is-ought Question: A Collection of Papers on the Central Problem in Moral Philosophy. Repr. London [u.a.]: Macmillan, 1973.

MLA (8th ed.) Citation

Hudson, W. D. The Is-ought Question: A Collection of Papers on the Central Problem in Moral Philosophy. Repr. Macmillan, 1973.

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