APA
United Nations. Department of Social Affairs, . (1952). In-service training in social welfare. New York: United Nations.
Chicago
United Nations. Department of Social Affairs, . 1952. In-service training in social welfare. New York: United Nations.
Harvard
United Nations. Department of Social Affairs, . (1952). In-service training in social welfare. New York: United Nations.
MLA
United Nations. Department of Social Affairs, . In-service training in social welfare. New York: United Nations. 1952.