American Institute of Stress. “Workplace Stress.” Accessed 12 апреля 2017 г. Сайт .
58
Health and Safety Executive. “Work related Stress, Anxiety and Depression Statistics in Great Britain 2016.” ноябрь 2016 г. Сайт .
59
Ricci, J. A., E. Chee, A. L. Lorandeau, and J. Berger. “Fatigue in the U. S. Workforce: Prevalence and Implications for Lost Productive Work Time.” Journal of Occupational and Environmental Medicine 49, no. 1, январь 2007 г.: 1–10.
