United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "June 2017," PPI Detailed Report (June 2017) : 2-2. https://fraser.stlouisfed.org/title/63/item/552736/toc/522081 , accessed on May 4, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "June 2017," PPI Detailed Report (June 2017) : 2-2. https://fraser.stlouisfed.org/title/63/item/552736/toc/522081 , accessed on May 4, 2024.