APA (7e ed.) Bronvermelding

Não informado. (1998). American journal of hygiene. Johns Hopkins University, School of Hygiene and Public Health.

Chicago (17e ed.) Bronvermelding

Não informado. American Journal of Hygiene. Baltimore, Md: Johns Hopkins University, School of Hygiene and Public Health, 1998.

MLA (8e ed.) Bronvermelding

Não informado. American Journal of Hygiene. Johns Hopkins University, School of Hygiene and Public Health, 1998.

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