Lindsey, Duncan. "Growing Inequality: From the “Era of the Middle Class” to the “Era of the Wealthy Class”." Child Poverty and Inequality: Securing a Better Future for America's Children. : Oxford University Press, 2008-09-18. Oxford Scholarship Online. 2010-04-01. Date Accessed 23 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195305449.001.0001/acprof-9780195305449-chapter-3>.
Lindsey, D.(2008-09-18). Growing Inequality: From the “Era of the Middle Class” to the “Era of the Wealthy Class”. In Child Poverty and Inequality: Securing a Better Future for America's Children. : Oxford University Press. Retrieved 23 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195305449.001.0001/acprof-9780195305449-chapter-3.
Lindsey, Duncan. "Growing Inequality: From the “Era of the Middle Class” to the “Era of the Wealthy Class”." In Child Poverty and Inequality: Securing a Better Future for America's Children. : Oxford University Press, 2008-09-18. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195305449.001.0001/acprof-9780195305449-chapter-3.
Lindsey D. Growing Inequality: From the “Era of the Middle Class” to the “Era of the Wealthy Class”. In: Lindsey D. Child Poverty and Inequality: Securing a Better Future for America's Children. Oxford University Press; 2008. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195305449.001.0001/acprof-9780195305449-chapter-3. Accessed May 23, 2013.