1. Man as Internal Customer for Working Environment Improvements
2. Mrugalska B., Arezes P. M., Occupational Safety and Hygiene, 97 (2013)
3. Mościcka-Teske A., Sadłowska-Wrzesińska J., Butlewski M., Misztal A., Jacukowicz A., Int J Occup Saf Ergo, 1 (2016)
4. BLS, Bureau of Labor Statistics 2016, Nonfatal Occupational Injuries and Illnesses Requiring Days Away from Work, http://www.bls.gov/news.release/pdf/osh2.pdf (2016)