APA
United Nations. Economic and Social Affairs (Deptt of --), United Nations. Economic and Social Affairs (Deptt of --), . (1961). International economic assistance to the less deve. New York: United Nations.
Chicago
United Nations. Economic and Social Affairs (Deptt of --), United Nations. Economic and Social Affairs (Deptt of --), . 1961. International economic assistance to the less deve. New York: United Nations.
Harvard
United Nations. Economic and Social Affairs (Deptt of --), United Nations. Economic and Social Affairs (Deptt of --), . (1961). International economic assistance to the less deve. New York: United Nations.
MLA
United Nations. Economic and Social Affairs (Deptt of --), United Nations. Economic and Social Affairs (Deptt of --), . International economic assistance to the less deve. New York: United Nations. 1961.