United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "July 2008," PPI Detailed Report (July 2008) : 2-3. https://fraser.stlouisfed.org/title/63/item/21872/toc/336704 , accessed on April 24, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "July 2008," PPI Detailed Report (July 2008) : 2-3. https://fraser.stlouisfed.org/title/63/item/21872/toc/336704 , accessed on April 24, 2024.