United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "June 2012," PPI Detailed Report (June 2012) : 2-3. https://fraser.stlouisfed.org/title/63/item/21919/toc/61072 , accessed on April 27, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "June 2012," PPI Detailed Report (June 2012) : 2-3. https://fraser.stlouisfed.org/title/63/item/21919/toc/61072 , accessed on April 27, 2024.