United States. Bureau of Labor Statistics. "National Compensation Survey: Grand Rapids-Muskegon-Holland, MI, November 1999 : Bulletin of the United States Bureau of Labor Statistics, No. 3100-52," National Compensation Survey (Wages and Salaries) (July 2000). https://fraser.stlouisfed.org/title/6009/item/582427, accessed on December 12, 2024.