United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "June 2011," PPI Detailed Report (June 2011) : 8-10. https://fraser.stlouisfed.org/title/63/item/21907/toc/36175 , accessed on May 1, 2024.
United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "June 2011," PPI Detailed Report (June 2011) : 8-10. https://fraser.stlouisfed.org/title/63/item/21907/toc/36175 , accessed on May 1, 2024.