United States. Bureau of the Census. "Price Movements," in United States. Bureau of the Census. "June 1981," Business Conditions Digest (June 1981) : 90-92. https://fraser.stlouisfed.org/title/43/item/7418/toc/412386 , accessed on April 24, 2024.
United States. Bureau of the Census. "Price Movements," in United States. Bureau of the Census. "June 1981," Business Conditions Digest (June 1981) : 90-92. https://fraser.stlouisfed.org/title/43/item/7418/toc/412386 , accessed on April 24, 2024.