1. Administration on Aging, Department of Health and Human Services. Aging statistics. 2010.
www.aoa.gov/aoaroot/aging.statistics/future_growth/future_goals
. Accessed 1 Aug 2012.
2. Administration on Aging, U.S. Department of Health and Human Services. A profile of older Americans: 2011.
www.aoa.dhhs.gov/prof/Statisticstatuspostrofile/profiles.asp
. Accessed 1 May 2012.
3. Older Americans 2012: key indicators of well-being.
http://agingstats.gov
. Accessed 4 Aug 2012.
4. Burke MM, Laramie J. Sensory impairment. In: A primary care of the older adult: a multidisciplinary approach. St. Louis: Mosby; 2000. p. 439–52.
5. Burke MM, Laramie J. Aging skin. In: A primary care of the older adult: a multidisciplinary approach. St. Louis: Mosby; 2000. p. 142–60.