United States. Bureau of Labor Statistics. "June 1977," The Employment Situation (July 8, 1977). https://fraser.stlouisfed.org/title/144/item/56122, accessed on April 30, 2024.
United States. Bureau of Labor Statistics. "June 1977," The Employment Situation (July 8, 1977). https://fraser.stlouisfed.org/title/144/item/56122, accessed on April 30, 2024.