^F.W. Hilbert, "Employers' Associations in the United States," in Jacob H. Hollander and George E. Barnett (eds.), Studies in American Trade Unionism. New York: Henry Holt and Co., 1912; pg. 195.
^"Public List of Employers Associations". UK Government. Retrieved 2016-01-25.
^Hilbert, "Employers' Associations in the United States," pg. 191.
^ abHilbert, "Employers' Associations in the United States," pg. 193.
^Hilbert, "Employers' Associations in the United States," pg. 194.