(1949). Historical statistics of the United States 1789-1945: A supplement to the statistical abstract of the United States / prepared by the Bureau of the Census with the cooperation of the Social Science Research Council, 1949. U.S. Gov. Print. Off..
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিHistorical Statistics of the United States 1789-1945: A Supplement to the Statistical Abstract of the United States / Prepared by the Bureau of the Census with the Cooperation of the Social Science Research Council, 1949. Washington: U.S. Gov. Print. Off., 1949.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিHistorical Statistics of the United States 1789-1945: A Supplement to the Statistical Abstract of the United States / Prepared by the Bureau of the Census with the Cooperation of the Social Science Research Council, 1949. U.S. Gov. Print. Off., 1949.