"Appendix D Thomas Hurka on the Structure of Goods." Oxford Scholarship Online. 2012-01-19. Oxford University Press. Date of access 23 May. 2013, <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199844463.001.0001/acprof-9780199844463-appendix-4>.
(2012-01-19). Appendix D Thomas Hurka on the Structure of Goods. Oxford Scholarship Online. Retrieved 23 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199844463.001.0001/acprof-9780199844463-appendix-4.
"Appendix D Thomas Hurka on the Structure of Goods." Oxford Scholarship Online. 23 May. 2013. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199844463.001.0001/acprof-9780199844463-appendix-4.
Appendix D Thomas Hurka on the Structure of Goods. In: Kraut R. Against Absolute Goodness. Oxford University Press; 2012. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199844463.001.0001/acprof-9780199844463-appendix-4. Accessed May 23, 2013.