Iowa. University. Institute of Public Affairs. (1955). A guide to Iowa child caring and placing agencies. Institute of Public Affairs, State University of Iowa, State Department of Social Welfare, Iowa Association of Children's Agencies and Institutions, cooperating. s.n.
Παραπομπή σε μορφή Chicago (17η εκδ.)Iowa. University. Institute of Public Affairs. A Guide to Iowa Child Caring and Placing Agencies. Institute of Public Affairs, State University of Iowa, State Department of Social Welfare, Iowa Association of Children's Agencies and Institutions, Cooperating. Iowa City: s.n, 1955.
Παραπομπή σε μορφή MLA (9th εκδ.)Iowa. University. Institute of Public Affairs. A Guide to Iowa Child Caring and Placing Agencies. Institute of Public Affairs, State University of Iowa, State Department of Social Welfare, Iowa Association of Children's Agencies and Institutions, Cooperating. s.n, 1955.