Anderson, Richard G. and Williams, Marcela M. "How U.S. Currency Stacks Up—at Home and Abroad," in Federal Reserve Bank of St. Louis. "Central Banker, Spring 2007," Central Banker : News and Views for Eighth District Bankers (April 2007) : 5-5. https://fraser.stlouisfed.org/title/6284/item/603094/toc/586472 , accessed on April 23, 2024.