United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "October 2006," PPI Detailed Report (October 2006) : 3-4. https://fraser.stlouisfed.org/title/63/item/21851/toc/389070 , accessed on April 23, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "October 2006," PPI Detailed Report (October 2006) : 3-4. https://fraser.stlouisfed.org/title/63/item/21851/toc/389070 , accessed on April 23, 2024.