United States. Bureau of Labor Statistics. "Price Movements," in United States. Bureau of Labor Statistics. "May 2014," PPI Detailed Report (May 2014) : 4-8. https://fraser.stlouisfed.org/title/63/item/21942/toc/312411 , accessed on May 2, 2024.
United States. Bureau of Labor Statistics. "Price Movements," in United States. Bureau of Labor Statistics. "May 2014," PPI Detailed Report (May 2014) : 4-8. https://fraser.stlouisfed.org/title/63/item/21942/toc/312411 , accessed on May 2, 2024.