United States. Bureau of Labor Statistics. "Area Wage Survey: Providence-Warwick-Pawtucket, Rhode Island-Massachusetts, Metropolitan Area, June 1981 : Bulletin of the United States Bureau of Labor Statistics, No. 3010-36," Area Wage Survey (September 1981). https://fraser.stlouisfed.org/title/4655/item/582207, accessed on October 6, 2024.