Board of Governors of the Federal Reserve System (U.S.), 1935-. "July 31, 1981," G.5 Foreign Exchange Rates (1981-07-31). https://fraser.stlouisfed.org/title/1281/item/51041, accessed on April 18, 2024.
Board of Governors of the Federal Reserve System (U.S.), 1935-. "July 31, 1981," G.5 Foreign Exchange Rates (1981-07-31). https://fraser.stlouisfed.org/title/1281/item/51041, accessed on April 18, 2024.