Producer Price Indexes Introduced for Security Guards and Patrol Services - NAICS 561612
United States. Bureau of Labor Statistics. "Producer Price Indexes Introduced for Security Guards and Patrol Services - NAICS 561612," in United States. Bureau of Labor Statistics. "July 2005," PPI Detailed Report (July 2005) : 17-17. https://fraser.stlouisfed.org/title/63/item/21837/toc/144708 , accessed on April 18, 2024.