United States. Bureau of Labor Statistics
and Personick, Martin E.
Profiles of Occupational Pay: A Chartbook : Bulletin of the United States Bureau of Labor Statistics, No. 2037 ,
Washington, D.C:
U.S. Dept. of Labor, Bureau of Labor Statistics,
December 1979, https://fraser.stlouisfed.org/title/4828,
accessed on December 12, 2024.