United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "February 2001," PPI Detailed Report (February 2001) : 9-11. https://fraser.stlouisfed.org/title/63/item/21784/toc/141520 , accessed on May 5, 2024.
United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "February 2001," PPI Detailed Report (February 2001) : 9-11. https://fraser.stlouisfed.org/title/63/item/21784/toc/141520 , accessed on May 5, 2024.