United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "July 2001," PPI Detailed Report (July 2001) : 11-13. https://fraser.stlouisfed.org/title/63/item/21789/toc/348402 , accessed on May 8, 2024.
United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "July 2001," PPI Detailed Report (July 2001) : 11-13. https://fraser.stlouisfed.org/title/63/item/21789/toc/348402 , accessed on May 8, 2024.