United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "January 2006," PPI Detailed Report (January 2006) : 3-4. https://fraser.stlouisfed.org/title/63/item/21843/toc/64704 , accessed on April 19, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "January 2006," PPI Detailed Report (January 2006) : 3-4. https://fraser.stlouisfed.org/title/63/item/21843/toc/64704 , accessed on April 19, 2024.