United States. Bureau of Labor Statistics. "National Compensation Survey: Milwaukee-Racine, WI, October 1999 : Bulletin of the United States Bureau of Labor Statistics, No. 3100-51,"
National Compensation Survey (Wages and Salaries)
(July 2000).
https://fraser.stlouisfed.org/title/6009/item/582426, accessed on December 16, 2025.