Board of Governors of the Federal Reserve System (U.S.), 1935-. "Trade Credit, Unadjusted Net Flows," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "February 17, 1981," Z.1 Financial Accounts of the United States (1981-02-17) : 52-52. https://fraser.stlouisfed.org/title/93/item/69064/toc/480654 , accessed on March 28, 2024.