Qizilbash, Mozaffar. "The Adaptation Problem, Evolution and Normative Economics*." Arguments for a Better World: Essays in Honor of Amartya Sen: Volume I: Ethics, Welfare, and Measurement. : Oxford University Press, 2008-12-04. Oxford Scholarship Online. 2009-05-01. Date Accessed 22 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199239115.001.0001/acprof-9780199239115-chapter-5>.
Qizilbash, M.(2008-12-04). The Adaptation Problem, Evolution and Normative Economics*. In Arguments for a Better World: Essays in Honor of Amartya Sen: Volume I: Ethics, Welfare, and Measurement. : Oxford University Press. Retrieved 22 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199239115.001.0001/acprof-9780199239115-chapter-5.
Qizilbash, Mozaffar. "The Adaptation Problem, Evolution and Normative Economics*." In Arguments for a Better World: Essays in Honor of Amartya Sen: Volume I: Ethics, Welfare, and Measurement. : Oxford University Press, 2008-12-04. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199239115.001.0001/acprof-9780199239115-chapter-5.
Qizilbash M. The Adaptation Problem, Evolution and Normative Economics*. In: Basu K, Kanbur R. Arguments for a Better World: Essays in Honor of Amartya Sen: Volume I: Ethics, Welfare, and Measurement. Oxford University Press; 2008. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199239115.001.0001/acprof-9780199239115-chapter-5. Accessed May 22, 2013.