Hudson, W. D. (1973). The is-ought question: A collection of papers on the central problem in moral philosophy (Repr.). Macmillan.
Cita Chicago Style (17a ed.)Hudson, W. D. The Is-ought Question: A Collection of Papers on the Central Problem in Moral Philosophy. Repr. London [u.a.]: Macmillan, 1973.
Cita MLA (8a ed.)Hudson, W. D. The Is-ought Question: A Collection of Papers on the Central Problem in Moral Philosophy. Repr. Macmillan, 1973.
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