United States. Bureau of Labor Statistics. "Technical Notes," in United States. Bureau of Labor Statistics. "May 1982," PPI Detailed Report (May 1982) : 114-117. https://fraser.stlouisfed.org/title/63/item/21558/toc/243429 , accessed on May 5, 2024.
United States. Bureau of Labor Statistics. "Technical Notes," in United States. Bureau of Labor Statistics. "May 1982," PPI Detailed Report (May 1982) : 114-117. https://fraser.stlouisfed.org/title/63/item/21558/toc/243429 , accessed on May 5, 2024.