United States. Bureau of the Census. "Composite Indexes," in United States. Bureau of the Census. "April 1984," Business Conditions Digest (April 1984) : 66-66. https://fraser.stlouisfed.org/title/43/item/7452/toc/211919 , accessed on May 4, 2024.
United States. Bureau of the Census. "Composite Indexes," in United States. Bureau of the Census. "April 1984," Business Conditions Digest (April 1984) : 66-66. https://fraser.stlouisfed.org/title/43/item/7452/toc/211919 , accessed on May 4, 2024.