United States. Bureau of Labor Statistics. "National Compensation Survey: Pilot Test, Denver-Boulder-Greeley, CO, December 1996 : Bulletin of the United States Bureau of Labor Statistics, No. 3090-7," National Compensation Survey (Wages and Salaries) (October 1997). https://fraser.stlouisfed.org/title/6009/item/582247, accessed on January 8, 2025.