Area Wage Survey: The New York, New York, Metropolitan Area, April 1971 : Bulletin : Bulletin of the United States Bureau of Labor Statistics, No. 1685-89
United States. Bureau of Labor Statistics. "Area Wage Survey: The New York, New York, Metropolitan Area, April 1971 : Bulletin : Bulletin of the United States Bureau of Labor Statistics, No. 1685-89," Area Wage Survey (1971). https://fraser.stlouisfed.org/title/4655/item/498750/content/pdf/bls_1685-89_1972, accessed on August 5, 2020.