United States. Bureau of Labor Statistics. "Text," in United States. Bureau of Labor Statistics. "First Quarter 1984 : Revised Data for Business, Nonfarm Business, and Manufacturing Sectors and Preliminary Measures for Nonfinancial Corporations," Productivity and Costs (May 29, 1984) : 1-6. https://fraser.stlouisfed.org/title/131/item/55982/toc/449899 , accessed on May 1, 2024.