United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "July 2008," PPI Detailed Report (July 2008) : 11-13. https://fraser.stlouisfed.org/title/63/item/21872/toc/336708 , accessed on April 24, 2024.
United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "July 2008," PPI Detailed Report (July 2008) : 11-13. https://fraser.stlouisfed.org/title/63/item/21872/toc/336708 , accessed on April 24, 2024.