United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "May 2016," PPI Detailed Report (May 2016) : 2-2. https://fraser.stlouisfed.org/title/63/item/530763/toc/517853 , accessed on May 1, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "May 2016," PPI Detailed Report (May 2016) : 2-2. https://fraser.stlouisfed.org/title/63/item/530763/toc/517853 , accessed on May 1, 2024.