National Compensation Survey: Portland-Salem, OR-WA, August 1997 : Bulletin of the United States Bureau of Labor Statistics, No. 3090-33
United States. Bureau of Labor Statistics. "National Compensation Survey: Portland-Salem, OR-WA, August 1997 : Bulletin of the United States Bureau of Labor Statistics, No. 3090-33," National Compensation Survey (Wages and Salaries) (May 1998). https://fraser.stlouisfed.org/title/6009/item/582273, accessed on April 19, 2024.
United States Bureau of Labor Statistics