United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "January 1979," PPI Detailed Report (January 1979) : 3-3. https://fraser.stlouisfed.org/title/63/item/21518/toc/99098 , accessed on June 29, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "January 1979," PPI Detailed Report (January 1979) : 3-3. https://fraser.stlouisfed.org/title/63/item/21518/toc/99098 , accessed on June 29, 2024.