United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "April 2000," PPI Detailed Report (April 2000) : 8-10. https://fraser.stlouisfed.org/title/63/item/21765/toc/315344 , accessed on April 18, 2024.
United States. Bureau of Labor Statistics. "Charts," in United States. Bureau of Labor Statistics. "April 2000," PPI Detailed Report (April 2000) : 8-10. https://fraser.stlouisfed.org/title/63/item/21765/toc/315344 , accessed on April 18, 2024.