National Institutes of Health Senior Health: "A Common Problem in Older Adults."
American Academy of Audiology: "Consequences of Untreated Hearing Loss."
American Academy of Audiology: "Fittings."
American Speech-Language-Hearing Association: "Buying Hearing Aids Online."
American Speech-Language-Hearing Association: "Types of Hearing Aids."
American Speech-Language-Hearing Association: "Daily Care and Troubleshooting Tips for Hearing Aids."
National Institute on Deafness and Other Communication Disorders: "Hearing Aids."
National Center for Rehabilitative Auditory Research: "Hearing Aid Care."
Arizona State University College of Health Solutions: "Tips on Hearing Aid Care."
Johns Hopkins Medicine: "Care for Hearing Aids."
Johns Hopkins Medicine: "Hearing Aid Technology."
Hearing Loss Association of America: "Implantable Hearing Devices."
Starkey Hearing Technologies: "Hearing Aid Batteries."
Martin, R. Hearing Journal, January 2004.
Rehabilitation Engineering Research Center on Hearing Enhancement: "The 'Occlusion Effect' -- What it is and What to Do About it."
News release, University of Pennsylvania.
Audiology Online: "Auditory Training Software Programs for Adults."
Healthy Hearing: "Take Care of Your Hearing Aids, So They Take Care of You."
U.S. Food and Drug Administration: "Medical Devices."
Sandlin, R. Textbook of Hearing Aid Amplification, Singular Publishing Group, 2000.