APA (7e ed.) Bronvermelding

Não informado. (1957). Water and Waste Treatment. DR Publications.

Chicago (17e ed.) Bronvermelding

Não informado. Water and Waste Treatment. Surrey, Inglaterra: DR Publications, 1957.

MLA (8e ed.) Bronvermelding

Não informado. Water and Waste Treatment. DR Publications, 1957.

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