Não informado. Periodontology Today. Southwest Society of Periodontists.
Chicago-Zitierstil (17. Ausg.)Não informado. Periodontology Today. San Antonio, Tex: Southwest Society of Periodontists.
MLA-Zitierstil (8. Ausg.)Não informado. Periodontology Today. Southwest Society of Periodontists.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.