Pope, Robert E. , Strasser, Arnold and United States. Bureau of Labor Statistics. Compensation Expenditures and Payroll Hours: Motor Passenger Transportation Industries, 1964 : Bulletin of the United States Bureau of Labor Statistics, No. 1561 , Washington, D.C: U.S. G.P.O., September 1967, https://fraser.stlouisfed.org/title/4679, accessed on February 23, 2026.