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.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিIowa. 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.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিIowa. 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.