United States. Bureau of the Census. "Wages and Productivity," in United States. Bureau of the Census. "May 1977," Business Conditions Digest (May 1977) : 92-93. https://fraser.stlouisfed.org/title/43/item/7369/toc/321334 , accessed on May 7, 2024.
United States. Bureau of the Census. "Wages and Productivity," in United States. Bureau of the Census. "May 1977," Business Conditions Digest (May 1977) : 92-93. https://fraser.stlouisfed.org/title/43/item/7369/toc/321334 , accessed on May 7, 2024.