United States. Bureau of Labor Statistics. "National Compensation Survey: Minneapolis-St. Paul, MN-WI, May 2006 : Bulletin of the United States Bureau of Labor Statistics, No. 3135-50," National Compensation Survey (Wages and Salaries) (April 2007). https://fraser.stlouisfed.org/title/6009/item/582962, accessed on September 17, 2024.