United States. Bureau of Labor Statistics. "National Survey of Professional, Administrative, Technical, and Clerical Pay, February-March 1964 : Bulletin of the United States Bureau of Labor Statistics, No. 1422,"
National Survey of Professional, Administrative, Technical, and Clerical Pay
(1964).
https://fraser.stlouisfed.org/title/4570/item/497924, accessed on March 7, 2025.
@FedFRASER