with Hirose, I. (eds) , 2015, The Oxford handbook of value theory, Oxford University Press, Oxford.
, 2012, 'Skorupski's middle way in metaethics', Philosophy and Phenomenological Research 85 (1), 192-200.
, 2011, In defense of moral error theory, in M. Brady (ed.), New waves in metaethics, Basingstoke, Palgrave Macmillan, pp. 62-84.
, 2003a, 'Revisiting the tropic of value: reply to Rabinowicz and Rønnow-Rasmussen', Philosophy and Phenomenological Research 67 (2), 412-422.