United States. Bureau of Labor Statistics. "Nonfinancial Corporations," in United States. Bureau of Labor Statistics. "Revised Fourth-Quarter and 1986 Annual Data for Business, Nonfarm Business, and Manufacturing, and Preliminary 1986 Annual Measures for Nonfinancial Corporations," Productivity and Costs (March 2, 1987) : 12-12. https://fraser.stlouisfed.org/title/131/item/55800/toc/451050 , accessed on May 1, 2024.