APA (7e ed.) Bronvermelding

Não informado. (2004). Hygienic Laboratory bulletin. Hygienic Laboratory.

Chicago (17e ed.) Bronvermelding

Não informado. Hygienic Laboratory Bulletin. Washington: Hygienic Laboratory, 2004.

MLA (8e ed.) Bronvermelding

Não informado. Hygienic Laboratory Bulletin. Hygienic Laboratory, 2004.

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