United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "March 2017," PPI Detailed Report (March 2017) : 9-12. https://fraser.stlouisfed.org/title/63/item/540624/toc/521163 , accessed on May 4, 2024.
United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "March 2017," PPI Detailed Report (March 2017) : 9-12. https://fraser.stlouisfed.org/title/63/item/540624/toc/521163 , accessed on May 4, 2024.