APA (7e ed.) Bronvermelding

Não informado. (1969). British water supply. British Waterworks Association.

Chicago (17e ed.) Bronvermelding

Não informado. British Water Supply. London: British Waterworks Association, 1969.

MLA (8e ed.) Bronvermelding

Não informado. British Water Supply. British Waterworks Association, 1969.

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