United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "October 1979," PPI Detailed Report (October 1979) : 3-3. https://fraser.stlouisfed.org/title/63/item/21527/toc/160980 , accessed on April 23, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "October 1979," PPI Detailed Report (October 1979) : 3-3. https://fraser.stlouisfed.org/title/63/item/21527/toc/160980 , accessed on April 23, 2024.