United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "March 2003," PPI Detailed Report (March 2003) : 3-4. https://fraser.stlouisfed.org/title/63/item/21809/toc/235005 , accessed on May 10, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "March 2003," PPI Detailed Report (March 2003) : 3-4. https://fraser.stlouisfed.org/title/63/item/21809/toc/235005 , accessed on May 10, 2024.