United States. Bureau of Labor Statistics. "Price Movements," in United States. Bureau of Labor Statistics. "June 2009," PPI Detailed Report (June 2009) : 4-8. https://fraser.stlouisfed.org/title/63/item/21876/toc/228844 , accessed on May 7, 2024.
United States. Bureau of Labor Statistics. "Price Movements," in United States. Bureau of Labor Statistics. "June 2009," PPI Detailed Report (June 2009) : 4-8. https://fraser.stlouisfed.org/title/63/item/21876/toc/228844 , accessed on May 7, 2024.