APA
United Nations. Department of Economic and Social Affairs.Statistical office, . (1976). World energy supplies. 1950-1974. New York: United Nations.
Chicago
United Nations. Department of Economic and Social Affairs.Statistical office, . 1976. World energy supplies. 1950-1974. New York: United Nations.
Harvard
United Nations. Department of Economic and Social Affairs.Statistical office, . (1976). World energy supplies. 1950-1974. New York: United Nations.
MLA
United Nations. Department of Economic and Social Affairs.Statistical office, . World energy supplies. 1950-1974. New York: United Nations. 1976.