United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "March 2016," PPI Detailed Report (March 2016) : 2-2. https://fraser.stlouisfed.org/title/63/item/528801/toc/517389 , accessed on May 6, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "March 2016," PPI Detailed Report (March 2016) : 2-2. https://fraser.stlouisfed.org/title/63/item/528801/toc/517389 , accessed on May 6, 2024.