United States. Bureau of Labor Statistics. "National Compensation Survey: Grand Rapids-Muskegon-Holland, MI, March 2001 : Bulletin of the United States Bureau of Labor Statistics, No. 3110-22,"
National Compensation Survey (Wages and Salaries)
(December 2001).
https://fraser.stlouisfed.org/title/6009/item/584809, accessed on September 14, 2024.