United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "October 2001," PPI Detailed Report (October 2001) : 3-4. https://fraser.stlouisfed.org/title/63/item/21792/toc/234200 , accessed on April 19, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "October 2001," PPI Detailed Report (October 2001) : 3-4. https://fraser.stlouisfed.org/title/63/item/21792/toc/234200 , accessed on April 19, 2024.