Occupational Wage Survey: San Bernardino-Riverside-Ontario, California, September 1961 : Bulletin of the United States Bureau of Labor Statistics, No. 1303-11
United States. Bureau of Labor Statistics. "Occupational Wage Survey: San Bernardino-Riverside-Ontario, California, September 1961 : Bulletin of the United States Bureau of Labor Statistics, No. 1303-11," Occupational Wage Survey (1961). https://fraser.stlouisfed.org/title/4510/item/497587, accessed on April 19, 2024.