United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "March 2002," PPI Detailed Report (March 2002) : 10-12. https://fraser.stlouisfed.org/title/63/item/21798/toc/116521 , accessed on April 24, 2024.
United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "March 2002," PPI Detailed Report (March 2002) : 10-12. https://fraser.stlouisfed.org/title/63/item/21798/toc/116521 , accessed on April 24, 2024.