United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "August 2012," PPI Detailed Report (August 2012) : 2-3. https://fraser.stlouisfed.org/title/63/item/21921/toc/49780 , accessed on April 19, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "August 2012," PPI Detailed Report (August 2012) : 2-3. https://fraser.stlouisfed.org/title/63/item/21921/toc/49780 , accessed on April 19, 2024.