1. Armstrong, D. M. (1978a). Nominalism and Realism. London: Cambridge University Press.
2. Armstrong, D. M. (1978b). A Theory of Universals. London: Cambridge University Press.
3. Beebee, H. (2006). Hume on Causation. London: Routledge.
4. Beebee, H. (2011). David Hume. In S. Bernecker and D. Pritchard (eds.), The Routledge Companion to Epistemology, London: Routledge, 730–40;
5. Biro, J. (1993). Hume’s new science of the mind. In D.F. Norton (ed.), The Cambridge Companion to Hume. Cambridge: Cambridge University Press, 33–63.