Estados Unidos. Social Security Administration. (2002). Social security programs throughout the world. Social Security Administration.
Cita Chicago Style (17a ed.)Estados Unidos. Social Security Administration. Social Security Programs Throughout the World. Washington, D.C.: Social Security Administration, 2002.
Cita MLA (8a ed.)Estados Unidos. Social Security Administration. Social Security Programs Throughout the World. Social Security Administration, 2002.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.