Area Wage Survey: The Minneapolis-St. Paul, Minnesota, Metropolitan Area, January 1971 : Bulletin of the United States Bureau of Labor Statistics, No. 1685-44
United States. Bureau of Labor Statistics. "Area Wage Survey: The Minneapolis-St. Paul, Minnesota, Metropolitan Area, January 1971 : Bulletin of the United States Bureau of Labor Statistics, No. 1685-44," Area Wage Survey (1971). https://fraser.stlouisfed.org/title/4655/item/498706, accessed on April 17, 2021.