Board of Governors of the Federal Reserve System (U.S.), 1935-. "Income and Product Accounts: GNP Expenditures and Gross Saving," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "February 8, 1977," Z.1 Financial Accounts of the United States (1977-02-08) : 7-7. https://fraser.stlouisfed.org/title/93/item/69135/toc/465789 , accessed on May 9, 2024.