United States. Bureau of Labor Statistics. "Price Movements," in United States. Bureau of Labor Statistics. "March 1997," PPI Detailed Report (March 1997) : 5-8. https://fraser.stlouisfed.org/title/63/item/21738/toc/309857 , accessed on May 7, 2024.
United States. Bureau of Labor Statistics. "Price Movements," in United States. Bureau of Labor Statistics. "March 1997," PPI Detailed Report (March 1997) : 5-8. https://fraser.stlouisfed.org/title/63/item/21738/toc/309857 , accessed on May 7, 2024.