United States. Bureau of Labor Statistics. "Price Movements," in United States. Bureau of Labor Statistics. "May 1992," PPI Detailed Report (May 1992) : 5-7. https://fraser.stlouisfed.org/title/63/item/21679/toc/350402 , accessed on April 19, 2024.
United States. Bureau of Labor Statistics. "Price Movements," in United States. Bureau of Labor Statistics. "May 1992," PPI Detailed Report (May 1992) : 5-7. https://fraser.stlouisfed.org/title/63/item/21679/toc/350402 , accessed on April 19, 2024.