United States. Bureau of Labor Statistics.
Premium Pay for Night, Weekend, and Overtime Work in Major Union Contracts : Bulletin of the United States Bureau of Labor Statistics, No. 1251 ,
Washington, D.C:
G.P.O.,
June 1959, https://fraser.stlouisfed.org/title/4538,
accessed on April 16, 2025.
@FedFRASER