United States. Bureau of Labor Statistics. "Nonfinancial Corporate Sector : Second Quarter 1979," Productivity and Costs (August 27, 1979). https://fraser.stlouisfed.org/title/131/item/55889, accessed on May 17, 2024.
United States. Bureau of Labor Statistics. "Nonfinancial Corporate Sector : Second Quarter 1979," Productivity and Costs (August 27, 1979). https://fraser.stlouisfed.org/title/131/item/55889, accessed on May 17, 2024.