Charles R. Pigden
(2009). If not non-cognitivism, then what?. In C. R. Pigden (Ed.). Hume on motivation and virtue (pp. 80-104). Basingstoke: Palgrave Macmillan.
(2009). Introduction. In C. R. Pigden (Ed.). Hume on motivation and virtue (pp. 1-29). Basingstoke: Palgrave Macmillan.
(ed) (2009). Hume on motivation and virtue. Basingstoke: Palgrave Macmillan.