Não informado. Periodontology Today. Southwest Society of Periodontists.
Chicago-referens (17:e uppl.)Não informado. Periodontology Today. San Antonio, Tex: Southwest Society of Periodontists.
MLA-referens (8:e uppl.)Não informado. Periodontology Today. Southwest Society of Periodontists.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.