Producer Price Indexes and Percent Changes for Commodity Groupings and Individual Items
United States. Bureau of Labor Statistics. "Producer Price Indexes and Percent Changes for Commodity Groupings and Individual Items," in United States. Bureau of Labor Statistics. "December 2007," PPI Detailed Report (December 2007) : 112-141. https://fraser.stlouisfed.org/title/63/item/21865/toc/254777 , accessed on April 23, 2024.