United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "February 2017," PPI Detailed Report (February 2017) : 2-2. https://fraser.stlouisfed.org/title/63/item/539810/toc/519479 , accessed on May 1, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "February 2017," PPI Detailed Report (February 2017) : 2-2. https://fraser.stlouisfed.org/title/63/item/539810/toc/519479 , accessed on May 1, 2024.