Board of Governors of the Federal Reserve System (U.S.), 1935-. "April 30, 1987," G.5 Foreign Exchange Rates (1987-04-30). https://fraser.stlouisfed.org/title/1281/item/51082, accessed on May 27, 2022.
Board of Governors of the Federal Reserve System (U.S.), 1935-. "April 30, 1987," G.5 Foreign Exchange Rates (1987-04-30). https://fraser.stlouisfed.org/title/1281/item/51082, accessed on May 27, 2022.