Buchanan, Allen. "Distributive Justice and the Diffusion of Innovations." Beyond Humanity?: The Ethics of Biomedical Enhancement. : Oxford University Press, 2011-02-01. Oxford Scholarship Online. 2011-09-22. Date Accessed 25 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199587810.001.0001/acprof-9780199587810-chapter-8>.
Buchanan, A.(2011-02-01). Distributive Justice and the Diffusion of Innovations. In Beyond Humanity?: The Ethics of Biomedical Enhancement. : Oxford University Press. Retrieved 25 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199587810.001.0001/acprof-9780199587810-chapter-8.
Buchanan, Allen. "Distributive Justice and the Diffusion of Innovations." In Beyond Humanity?: The Ethics of Biomedical Enhancement. : Oxford University Press, 2011-02-01. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199587810.001.0001/acprof-9780199587810-chapter-8.
Buchanan A. Distributive Justice and the Diffusion of Innovations. In: Buchanan AE. Beyond Humanity?: The Ethics of Biomedical Enhancement. Oxford University Press; 2011. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199587810.001.0001/acprof-9780199587810-chapter-8. Accessed May 25, 2013.