APA (7e ed.) Bronvermelding

Não informado. Periodontology Today. Southwest Society of Periodontists.

Chicago (17e ed.) Bronvermelding

Não informado. Periodontology Today. San Antonio, Tex: Southwest Society of Periodontists.

MLA (8e ed.) Bronvermelding

Não informado. Periodontology Today. Southwest Society of Periodontists.

Let op: Deze citaties zijn niet altijd 100% accuraat.