United States. Bureau of Labor Statistics. "Price Movements," in United States. Bureau of Labor Statistics. "March 2006," PPI Detailed Report (March 2006) : 5-9. https://fraser.stlouisfed.org/title/63/item/21845/toc/79575 , accessed on May 14, 2024.
United States. Bureau of Labor Statistics. "Price Movements," in United States. Bureau of Labor Statistics. "March 2006," PPI Detailed Report (March 2006) : 5-9. https://fraser.stlouisfed.org/title/63/item/21845/toc/79575 , accessed on May 14, 2024.