United States. Bureau of the Census. "Price Movements," in United States. Bureau of the Census. "January 1981," Business Conditions Digest (January 1981) : 90-92. https://fraser.stlouisfed.org/title/43/item/7413/toc/140457 , accessed on May 4, 2024.
United States. Bureau of the Census. "Price Movements," in United States. Bureau of the Census. "January 1981," Business Conditions Digest (January 1981) : 90-92. https://fraser.stlouisfed.org/title/43/item/7413/toc/140457 , accessed on May 4, 2024.