United States. Bureau of Labor Statistics. "National Compensation Survey: Occupational Wages in the Mountain Census Division, 1999 : Bulletin of the United States Bureau of Labor Statistics, No. 2544-8," National Compensation Survey: Occupational Wages in the United States (July 2001). https://fraser.stlouisfed.org/title/6084/item/584710, accessed on September 18, 2024.