United States. Bureau of the Census. "Leading Indicators," in United States. Bureau of the Census. "April 1976," Business Conditions Digest (April 1976) : 69-69. https://fraser.stlouisfed.org/title/43/item/7356/toc/360177 , accessed on May 4, 2024.
United States. Bureau of the Census. "Leading Indicators," in United States. Bureau of the Census. "April 1976," Business Conditions Digest (April 1976) : 69-69. https://fraser.stlouisfed.org/title/43/item/7356/toc/360177 , accessed on May 4, 2024.