Audi, R. (2002) Epistemology: a contemporary introduction to the theory of knowledge. 2nd ed. New York: Routledge.
Ayer, A.J. (1954) Philosophical essays. London: Macmillan.
Bennett, J. (2001) ‘Secondary Qualities’, in Learning from six philosophers: Descartes, Spinoza, Leibniz, Locke, Berkeley, Hume. Oxford: Clarendon, pp. 74–91. Available at: https://doi.org/10.1093/0198250924.003.0005.
Burke, Michael (1992) ‘Copper statues and pieces of copper: a challenge to the standard account’, Copper statues and pieces of copper: a challenge to the standard account, 52. Available at: http://findit.bham.ac.uk/primo_library/libweb/action/display.do?tabs=detailsTab&ct=display&fn=search&doc=TN_proquest1293500646&indx=1&recIds=TN_proquest1293500646&recIdxs=0&elementId=0&renderMode=poppedOut&displayMode=full&frbrVersion=&frbg=&&dscnt=0&scp.scps=scope%3A%2844BIR_PDA1_DS%29%2Cscope%3A%2844BIR_ETH1_DS%29%2Cscope%3A%2844BIR_LGUI_DS%29%2Cscope%3A%2844BIR_PURE_FT%29%2Cscope%3A%2844BIR_ALEPH_DS%29%2Cscope%3A%2844BIR_MIM_DS+%29%2Cscope%3A%2844BIR_RLIST_DS%29%2Cscope%3A%2844BIR_ML_DS%29%2Cscope%3A%2844BIR_SFX_DS%29%2Cscope%3A%2844BIR_DR1_DS%29%2Cscope%3A%2844BIR_DR2_DS%29%2C44BIR_Ebsco_1%2Cprimo_central_multiple_fe&mode=Basic&vid=44BIR_VU1&srt=rank&tab=local&vl(freeText0)=Copper%20Statues%20and%20Pieces%20of%20Copper%3A%20A%20Challenge%20to%20the%20Standard%20Account&dum=true&dstmp=1505298488192.
Conee, Earl Brink 1950- (2005) Riddles of existence [electronic resource] : a guided tour of metaphysics. Available at: http://findit.bham.ac.uk/primo_library/libweb/action/display.do?tabs=detailsTab&ct=display&fn=search&doc=44BIR_PDA1_DSebr10194211&indx=2&recIds=44BIR_PDA1_DSebr10194211&recIdxs=1&elementId=1&renderMode=poppedOut&displayMode=full&frbrVersion=&frbg=&&dscnt=0&scp.scps=scope%3A%2844BIR_PDA1_DS%29%2Cscope%3A%2844BIR_ETH1_DS%29%2Cscope%3A%2844BIR_LGUI_DS%29%2Cscope%3A%2844BIR_PURE_FT%29%2Cscope%3A%2844BIR_ALEPH_DS%29%2Cscope%3A%2844BIR_MIM_DS+%29%2Cscope%3A%2844BIR_RLIST_DS%29%2Cscope%3A%2844BIR_ML_DS%29%2Cscope%3A%2844BIR_SFX_DS%29%2Cscope%3A%2844BIR_DR1_DS%29%2Cscope%3A%2844BIR_DR2_DS%29%2C44BIR_Ebsco_1%2Cprimo_central_multiple_fe&mode=Basic&vid=44BIR_VU1&srt=rank&tab=local&vl(freeText0)=riddles%20of%20existence&dum=true&dstmp=1505297810314.
Descartes, R. and Cottingham, J. (1996) Meditations on first philosophy: with selections from the objections and replies. Rev. ed. Cambridge: Cambridge University Press.
Descartes, R. and Cottingham, J. (2013) Meditations on first philosophy: with selections from the objections and replies : a Latin-English edition. Cambridge, England: Cambridge University Press. Available at: https://www.cambridge.org/core/books/rene-descartes-meditations-on-first-philosophy/35981334D95E74F1D4AD4EADCD796920.
Earl Conee , and  Theodore Sider (2014) Riddles of Existence : A Guided Tour of Metaphysics: New Edition. OUP Oxford. Available at: https://ebookcentral.proquest.com/lib/oasispreview/reader.action?docID=1794211.
Frankfurt, H.G. (1969) ‘Alternate Possibilities and Moral Responsibility’, The Journal of Philosophy, 66(23). Available at: https://doi.org/10.2307/2023833.
Jack, Smart (no date) ‘The Mind/Brain Identity Theory’. Available at: https://plato.stanford.edu/entries/mind-identity/.
Locke, J. and Woolhouse, R.S. (1997) An essay concerning human understanding. London: Penguin.
Nagel, T. (1974) ‘What Is It Like to Be a Bat?’, The Philosophical Review, 83(4). Available at: https://doi.org/10.2307/2183914.
Shafer-Landau, R. (2013a) Ethical theory: an anthology. 2nd ed. Chichester, West Sussex: Wiley-Blackwell. Available at: http://sfxeu07.hosted.exlibrisgroup.com/bham?isbn=9781280878435%20.
Shafer-Landau, R. (2013b) Ethical theory: an anthology. 2nd ed. Chichester, West Sussex: Wiley-Blackwell. Available at: http://sfxeu07.hosted.exlibrisgroup.com/bham?isbn=9781280878435%20.
Shafer-Landau, R. (2013c) Ethical theory: an anthology. 2nd ed. Chichester, West Sussex: Wiley-Blackwell. Available at: http://sfxeu07.hosted.exlibrisgroup.com/bham?isbn=9781280878435%20.
Shafer-Landau, R. (2013d) Ethical theory: an anthology. 2nd ed. Chichester, West Sussex: Wiley-Blackwell. Available at: http://sfxeu07.hosted.exlibrisgroup.com/bham?isbn=9781280878435%20.
Shafer-Landau, R. (2013e) Ethical theory: an anthology. 2nd ed. Chichester, West Sussex: Wiley-Blackwell. Available at: http://sfxeu07.hosted.exlibrisgroup.com/bham?isbn=9781280878435%20.