United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "June 1983," PPI Detailed Report (June 1983) : 3-3. https://fraser.stlouisfed.org/title/63/item/21571/toc/175215 , accessed on April 18, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "June 1983," PPI Detailed Report (June 1983) : 3-3. https://fraser.stlouisfed.org/title/63/item/21571/toc/175215 , accessed on April 18, 2024.