United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "August 1979," PPI Detailed Report (August 1979) : 3-3. https://fraser.stlouisfed.org/title/63/item/21525/toc/420391 , accessed on April 25, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "August 1979," PPI Detailed Report (August 1979) : 3-3. https://fraser.stlouisfed.org/title/63/item/21525/toc/420391 , accessed on April 25, 2024.