APA

E.U.A. Social Security Administration, . (1999). OASDI beneficiaries by ZIP code aerea. December 1998.II New York Region. Washington?: SSA. Office of Policy. Office of Research.

Chicago

E.U.A. Social Security Administration, . 1999. OASDI beneficiaries by ZIP code aerea. December 1998.II New York Region. Washington?: SSA. Office of Policy. Office of Research.

Harvard

E.U.A. Social Security Administration, . (1999). OASDI beneficiaries by ZIP code aerea. December 1998.II New York Region. Washington?: SSA. Office of Policy. Office of Research.

MLA

E.U.A. Social Security Administration, . OASDI beneficiaries by ZIP code aerea. December 1998.II New York Region. Washington?: SSA. Office of Policy. Office of Research. 1999.