United States. Bureau of Labor Statistics. "Occupational Compensation Survey: Pay Only, Philadelphia, Pennsylvania-New Jersey, Metropolitan Area, November 1996 : Bulletin of the United States Bureau of Labor Statistics, No. 3085-45," Occupational Compensation Survey: Pay (April 1997). https://fraser.stlouisfed.org/title/6073/item/584667, accessed on December 31, 2024.