United States. Bureau of Labor Statistics. "National Survey of Professional, Administrative, Technical, and Clerical Pay, March 1977 : Bulletin of the United States Bureau of Labor Statistics, No. 1980,"
National Survey of Professional, Administrative, Technical, and Clerical Pay
(1977).
https://fraser.stlouisfed.org/title/4570/item/499411, accessed on September 13, 2024.