Board of Governors of the Federal Reserve System (U.S.), 1935-. "Profit Taxes Payable, Seasonally Adjusted Annual Rates," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "August 30, 1978 : Revisions for 1972-77," Z.1 Financial Accounts of the United States (1978-08-30) : 53-53. https://fraser.stlouisfed.org/title/93/item/69132/toc/479339 , accessed on April 28, 2024.