Hart, H. H. (1924). Child welfare in the District of Columbia: A study of agencies and institutions for the care of dependent and delinquent children. Russell Sage Foundation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHart, Hastings H. Child Welfare in the District of Columbia: A Study of Agencies and Institutions for the Care of Dependent and Delinquent Children. New York: Russell Sage Foundation, 1924.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHart, Hastings H. Child Welfare in the District of Columbia: A Study of Agencies and Institutions for the Care of Dependent and Delinquent Children. Russell Sage Foundation, 1924.
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