United States. Bureau of Labor Statistics. "National Compensation Survey: St. Louis, MO-IL, June 2005 : Bulletin of the United States Bureau of Labor Statistics, No. 3130-47,"
National Compensation Survey (Wages and Salaries)
(March 2006).
https://fraser.stlouisfed.org/title/6009/item/582882, accessed on September 17, 2024.