APA (7e ed.) Bronvermelding

Não informado. (2001). Yearbook. American Public Health Association.

Chicago (17e ed.) Bronvermelding

Não informado. Yearbook. New York: American Public Health Association, 2001.

MLA (8e ed.) Bronvermelding

Não informado. Yearbook. American Public Health Association, 2001.

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