Federal Reserve Bank of St. Louis. "Investment Spending," in Federal Reserve Bank of St. Louis. "April 2011," National Economic Trends (April 2011) : 14-15. https://fraser.stlouisfed.org/title/870/item/599656/toc/579434 , accessed on May 3, 2024.
Federal Reserve Bank of St. Louis. "Investment Spending," in Federal Reserve Bank of St. Louis. "April 2011," National Economic Trends (April 2011) : 14-15. https://fraser.stlouisfed.org/title/870/item/599656/toc/579434 , accessed on May 3, 2024.