"References." Oxford Scholarship Online. 2010-04-01. Oxford University Press. Date of access 26 May. 2013, <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199207466.001.0001/acprof-9780199207466-bibliography-1>.
(2010-04-01). References. Oxford Scholarship Online. Retrieved 26 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199207466.001.0001/acprof-9780199207466-bibliography-1.
"References." Oxford Scholarship Online. 26 May. 2013. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199207466.001.0001/acprof-9780199207466-bibliography-1.
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