Vu، Angela؛ Terrell، Ellen (30 أبريل 2017). "Dow Jones Industrial Average First Published". This Month in Business History. Washington, DC: Library of Congress, Business reference Services. مؤرشف من الأصل في 2020-10-25.
Vu، Angela؛ Terrell، Ellen (30 أبريل 2017). "Dow Jones Industrial Average First Published". This Month in Business History. Washington, DC: Library of Congress, Business reference Services. مؤرشف من الأصل في 2020-10-25.