1. Migration Policy Institute (2012) “Number of immigrants and immigrants as percentage of the US population, 1850 to 2011.” MPI Data Hub: Migration Facts, Stats, and Maps, www.migrationinformation.org/datahub/charts/final/fb.shtml (accessed November 7).
2. White Michael J. , and Jennifer Glick (2009) Achieving Anew: How New Immigrants Do in American Schools, Jobs, and Neighborhoods. New York: Russell Sage Foundation.
3. Inequality in the West: Racial and ethnic variation in occupational status and returns to education, 1940–2000;Tolnay;Social Science Research,2007