Board of Governors of the Federal Reserve System (U.S.), 1935-. "April 15, 1981," G.12.3 Industrial Production (1981-04-15). https://fraser.stlouisfed.org/title/55/item/59643, accessed on April 21, 2024.
Board of Governors of the Federal Reserve System (U.S.), 1935-. "April 15, 1981," G.12.3 Industrial Production (1981-04-15). https://fraser.stlouisfed.org/title/55/item/59643, accessed on April 21, 2024.