EspenshadeT.J.FuH. (1997). An analysis of English-language proficiency among U.S. immigrants. American Sociological Review, 62, 288–305.
2.
HakutaK.BialystokE.WileyE. (2003). Critical evidence: A test of the critical-period hypothesis for second-language acquisition. Psychological Science, 14, 31–38.
3.
StevensG. (1992). The social and demographic context of language use in the United States. American Sociological Review, 57, 171–185.
4.
U.S. Bureau of the Census. (1995). 1990 census of population and housing: Detailed cross-tabulations of selected language groups for states: 1990 [CD-ROM]. Washington, DC: Bureau of the Census, Population Division.
