Aphthous stomatitis. EBSCO DynaMed website. Available at:
https://dynamed.ebscohost.com/about/about-us. Updated August 31, 2012. Accessed December 7, 2012.
Beers MH, Berkow R.
The Merck Manual. 17th ed. West Point, PA: Merck and Co; 1999.
Canker sores. American Family Physicians Family Doctor website. Available at:
http://familydoctor.org/familydoctor/en/diseases-conditions/canker-sores.html. Accessed December 7, 2012.
American Academy of Family Physicians
American Dental Association
Canadian Family Physician