Elliott, Doreen, Uma A. Segal, and Nazneen S. Mayadas. "Immigration Worldwide: Themes and Issues." Immigration Worldwide: Policies, Practices, and Trends. : Oxford University Press, 2009-12-15. Oxford Scholarship Online. 2010-02-01. Date Accessed 25 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195388138.001.0001/acprof-9780195388138-chapter-30>.
Elliott, D., Segal, U., & Mayadas, N.(2009-12-15). Immigration Worldwide: Themes and Issues. In Immigration Worldwide: Policies, Practices, and Trends. : Oxford University Press. Retrieved 25 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195388138.001.0001/acprof-9780195388138-chapter-30.
Elliott, Doreen, Uma A. Segal, and Nazneen S. Mayadas. "Immigration Worldwide: Themes and Issues." In Immigration Worldwide: Policies, Practices, and Trends. : Oxford University Press, 2009-12-15. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195388138.001.0001/acprof-9780195388138-chapter-30.
Elliott D, Segal UA, Mayadas NS. Immigration Worldwide: Themes and Issues. In: Segal UA, Elliott D, Mayadas NS. Immigration Worldwide: Policies, Practices, and Trends. Oxford University Press; 2009. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195388138.001.0001/acprof-9780195388138-chapter-30. Accessed May 25, 2013.