1. Berg B. Qualitative research methods for the social sciences. Toronto: Allyn and Bacon; 1998.
2. Aldrich M. Safety first: technology, labor and business in the building of american work safety, 1870–1939. Baltimore: The Johns Hopkins University Press; 1997.
3. Messing K. One-eyed science: occupational health and women workers. Ambler: Temple University Press; 1998.
4. Bale A. America’s first compensation crisis: conflict over the value and meaning of workplace injuries under the employer liability system. In: Rosner D, Markowitz G, editors. Dying for a living: workers’ safety and health in twentieth-century America. Bloomington, IN: Indiana University Press; 1989. p. 34–52.
5. Witt J. The accidental republic: crippled workingmen, destitute widows and the remaking of American law. Cambridge: Harvard University Press; 2004.