Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industrial Production Indexes 1979," G.12.3 Industrial Production (1980-09-01). https://fraser.stlouisfed.org/title/55/item/59635, accessed on May 4, 2024.
Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industrial Production Indexes 1979," G.12.3 Industrial Production (1980-09-01). https://fraser.stlouisfed.org/title/55/item/59635, accessed on May 4, 2024.