United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "January 2001," PPI Detailed Report (January 2001) : 14-16. https://fraser.stlouisfed.org/title/63/item/21783/toc/138914 , accessed on April 22, 2024.
United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "January 2001," PPI Detailed Report (January 2001) : 14-16. https://fraser.stlouisfed.org/title/63/item/21783/toc/138914 , accessed on April 22, 2024.