Board of Governors of the Federal Reserve System (U.S.), 1935-. "Real Estate Investment Trusts, Seasonally Adjusted Annual Rates," 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) : 35-35. https://fraser.stlouisfed.org/title/93/item/69064/toc/480689 , accessed on May 4, 2024.