APA (7e ed.) Bronvermelding

Não informado. (1989). Water Environment & Technology. Water Pollution Control Federation.

Chicago (17e ed.) Bronvermelding

Não informado. Water Environment & Technology. Alexandria, Va: Water Pollution Control Federation, 1989.

MLA (8e ed.) Bronvermelding

Não informado. Water Environment & Technology. Water Pollution Control Federation, 1989.

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