United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "January 2008," PPI Detailed Report (January 2008) : 11-13. https://fraser.stlouisfed.org/title/63/item/21866/toc/72379 , accessed on May 8, 2024.
United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "January 2008," PPI Detailed Report (January 2008) : 11-13. https://fraser.stlouisfed.org/title/63/item/21866/toc/72379 , accessed on May 8, 2024.