Wisconsin Historical Society, George Meany Memorial Archives, Catholic University of America. American Catholic Research Center and University Archives, Walter P. Reuther Library, & ProQuest (Firm). (2017). ProQuest history vault: Knights of Labor, AFL, CIO, and AFL-CIO. ProQuest.
Chicago Style (17th ed.) CitationWisconsin Historical Society, George Meany Memorial Archives, Catholic University of America. American Catholic Research Center and University Archives, Walter P. Reuther Library, and ProQuest (Firm). ProQuest History Vault: Knights of Labor, AFL, CIO, and AFL-CIO. [Ann Arbor, Michigan]: ProQuest, 2017.
MLA (9th ed.) CitationWisconsin Historical Society, et al. ProQuest History Vault: Knights of Labor, AFL, CIO, and AFL-CIO. ProQuest, 2017.
Warning: These citations may not always be 100% accurate.