United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "June 2002," PPI Detailed Report (June 2002) : 3-4. https://fraser.stlouisfed.org/title/63/item/21795/toc/238729 , accessed on April 25, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "June 2002," PPI Detailed Report (June 2002) : 3-4. https://fraser.stlouisfed.org/title/63/item/21795/toc/238729 , accessed on April 25, 2024.