United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "July 2009," PPI Detailed Report (July 2009) : 14-16. https://fraser.stlouisfed.org/title/63/item/21885/toc/340548 , accessed on April 24, 2024.
United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "July 2009," PPI Detailed Report (July 2009) : 14-16. https://fraser.stlouisfed.org/title/63/item/21885/toc/340548 , accessed on April 24, 2024.