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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Conference on Social Security New York و 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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)National Conference on Social Security New York و 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.