United States. Bureau of the Census. "Production and Income," in United States. Bureau of the Census. "May 1977," Business Conditions Digest (May 1977) : 26-27. https://fraser.stlouisfed.org/title/43/item/7369/toc/321290 , accessed on May 1, 2024.
United States. Bureau of the Census. "Production and Income," in United States. Bureau of the Census. "May 1977," Business Conditions Digest (May 1977) : 26-27. https://fraser.stlouisfed.org/title/43/item/7369/toc/321290 , accessed on May 1, 2024.