International Conference on Social Welfare (14th : 1968 : Helsinki) & International Council on Social Welfare. (1969). Social welfare and human rights: Proceedings of the 14th International Conference on Social Welfare, Helsinki, Finland, August 18-24, 1968. Columbia University Press for the International Council on Social Welfare.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Conference on Social Welfare (14th : 1968 : Helsinki) و International Council on Social Welfare. Social Welfare and Human Rights: Proceedings of the 14th International Conference on Social Welfare, Helsinki, Finland, August 18-24, 1968. New York: Columbia University Press for the International Council on Social Welfare, 1969.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)International Conference on Social Welfare (14th : 1968 : Helsinki) و International Council on Social Welfare. Social Welfare and Human Rights: Proceedings of the 14th International Conference on Social Welfare, Helsinki, Finland, August 18-24, 1968. Columbia University Press for the International Council on Social Welfare, 1969.