Social security administration. (2003). A guide to SSI for groups and organizations. USA: Social security administration.
Trích dẫn kiểu ChicagoSocial security administration. A Guide to SSI for Groups and Organizations. USA: Social security administration, 2003.
MLA引文Social security administration. A Guide to SSI for Groups and Organizations. USA: Social security administration, 2003.
警告：這些引文格式不一定是100％准確.