United Nations. Dept. of Social Affairs. (1952). In-service training in social welfare. s.n.
Chicagoスタイル(17版)引用形式United Nations. Dept. of Social Affairs. In-service Training in Social Welfare. New York: s.n, 1952.
MLA(9版)引用形式United Nations. Dept. of Social Affairs. In-service Training in Social Welfare. s.n, 1952.
警告: この引用は必ずしも正確ではありません.