United States. Bureau of Labor Statistics. "National Compensation Survey: Visalia-Tulare-Porterville, CA, July 1998 : Bulletin of the United States Bureau of Labor Statistics, No. 3095-28,"
National Compensation Survey (Wages and Salaries)
(August 1999).
https://fraser.stlouisfed.org/title/6009/item/582318, accessed on January 5, 2026.