United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "March 2013," PPI Detailed Report (March 2013) : 8-10. https://fraser.stlouisfed.org/title/63/item/21928/toc/221791 , accessed on April 19, 2024.
United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "March 2013," PPI Detailed Report (March 2013) : 8-10. https://fraser.stlouisfed.org/title/63/item/21928/toc/221791 , accessed on April 19, 2024.