APA

United States, . (20042006). Estimates of the legal permanent resident population and population eligible to naturalize in. [Washington, D.C.]: U.S. Department of Homeland Security, Office of Immigration Statistics.

Chicago

United States, . 20042006. Estimates of the legal permanent resident population and population eligible to naturalize in. [Washington, D.C.]: U.S. Department of Homeland Security, Office of Immigration Statistics.

Harvard

United States, . (20042006). Estimates of the legal permanent resident population and population eligible to naturalize in. [Washington, D.C.]: U.S. Department of Homeland Security, Office of Immigration Statistics.

MLA

United States, . Estimates of the legal permanent resident population and population eligible to naturalize in. [Washington, D.C.]: U.S. Department of Homeland Security, Office of Immigration Statistics. 20042006.