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.
芝加哥风格引文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.
MLA引文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.