Lane, A. T. (1984). "American Trade Unions, Mass Immigration and the Literacy Test: 1900–1917". Labor History. 25 (1): 5–25. doi:10.1080/00236568408584739.
Lake, Marilyn. (2006). Connected Worlds: History in Transnational Perspective. Australian National University. pp. 209–230. ISBN978-1-920942-45-8. OCLC1135556055.