United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "January 1983," PPI Detailed Report (January 1983) : 3-3. https://fraser.stlouisfed.org/title/63/item/21566/toc/317255 , accessed on May 7, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "January 1983," PPI Detailed Report (January 1983) : 3-3. https://fraser.stlouisfed.org/title/63/item/21566/toc/317255 , accessed on May 7, 2024.