United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "May 2014," PPI Detailed Report (May 2014) : 2-3. https://fraser.stlouisfed.org/title/63/item/21942/toc/312410 , accessed on April 24, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "May 2014," PPI Detailed Report (May 2014) : 2-3. https://fraser.stlouisfed.org/title/63/item/21942/toc/312410 , accessed on April 24, 2024.