National Conference on Social Security New York & American Association for Social Security. (1928). Old age security: Report of proceedings, first National conference on old age security, held in New York city, April 10, 1928. American association for old age security.
Chicago-referens (17:e uppl.)National Conference on Social Security New York och American Association for Social Security. Old Age Security: Report of Proceedings, First National Conference on Old Age Security, Held in New York City, April 10, 1928. New York city: American association for old age security, 1928.
MLA-referens (8:e uppl.)National Conference on Social Security New York och American Association for Social Security. Old Age Security: Report of Proceedings, First National Conference on Old Age Security, Held in New York City, April 10, 1928. American association for old age security, 1928.