United States. Congress. Joint Economic Committee. Subcommittee on International Exchange and Payments and Ninety-Second Congress, 1971-1973. Gold, SDR's, and Central Bank Swaps : Report of the Subcommittee on International Exchange and Payments of the Joint Economic Committee, Congress of the United States , Washington: U.S. Government Printing Office, November 18, 1972, https://fraser.stlouisfed.org/title/886, accessed on August 7, 2024.