United States. Bureau of Labor Statistics
, Rosenthal, Neal H.
and Crowley, Michael F.
College Educated Workers, 1968-80: A Study of Supply and Demand : Bulletin of the United States Bureau of Labor Statistics, No. 1676 ,
Washington, D.C:
U.S. G.P.O.,
1970, https://fraser.stlouisfed.org/title/4675,
accessed on October 31, 2025.