Board of Governors of the Federal Reserve System (U.S.), 1935-. "June 30, 1989," G.5 Foreign Exchange Rates (1989-06-30). https://fraser.stlouisfed.org/title/1281/item/51103, accessed on April 23, 2024.
Board of Governors of the Federal Reserve System (U.S.), 1935-. "June 30, 1989," G.5 Foreign Exchange Rates (1989-06-30). https://fraser.stlouisfed.org/title/1281/item/51103, accessed on April 23, 2024.