United States. Bureau of Labor Statistics. "Private Business, Nonfarm Business, and Manufacturing Sectors : First Quarter 1977 (and Data for Nonfinancial Corporations, Fourth Quarter 1976),"
Productivity and Costs
(April 27, 1977).
https://fraser.stlouisfed.org/title/131/item/55874, accessed on May 7, 2025.
@FedFRASER