Karen Zeigler and Steven A. Camarota, “One in Five U.S. Residents Speaks Foreign Language at Home, Record 61.8 million,” Center for Immigration Studies, October 2014, http://cis.org//sites/cis.org/files/camarota-language.pdf.
Karen Zeigler and Steven A. Camarota, “One in Five U.S. Residents Speaks Foreign Language at Home, Record 61.8 million,” Center for Immigration Studies, October 2014, http://cis.org//sites/cis.org/files/camarota-language.pdf.