APA (7e ed.) Bronvermelding

Não informado. (1968). Abstracts on hygiene. Bureau of Hygiene and Tropical Diseases.

Chicago (17e ed.) Bronvermelding

Não informado. Abstracts on Hygiene. London: Bureau of Hygiene and Tropical Diseases, 1968.

MLA (8e ed.) Bronvermelding

Não informado. Abstracts on Hygiene. Bureau of Hygiene and Tropical Diseases, 1968.

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