United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "July 2015," PPI Detailed Report (July 2015) : 2-2. https://fraser.stlouisfed.org/title/63/item/496045/toc/511835 , accessed on April 22, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "July 2015," PPI Detailed Report (July 2015) : 2-2. https://fraser.stlouisfed.org/title/63/item/496045/toc/511835 , accessed on April 22, 2024.