David Vergun, «Sleep Issues Bedeviling Soldiers' Health,» U.S. Army, September 10, 2015, http://www.army.mil.
153
Shantha M. W. Rajaratnam, Laura K. Barger, Steven W. Lockley, Steven A. Shea, Wei Wang, Christopher P. Landrigan, Conor S. O'Brien, Salim Qadri, Jason P. Sullivan, Brian E. Cade, Lawrence J. Epstein, David P. White, and Charles A. Czeisler, «Sleep Disorders, Health, and Safety in Police Officers,» The Journal of the American Medical Association 306 (2011): 2567–78.
