APA (7e ed.) Bronvermelding

Não informado. (1990). Research Journal of the Water Pollution Control Federation. Water Pollution Control Federation.

Chicago (17e ed.) Bronvermelding

Não informado. Research Journal of the Water Pollution Control Federation. Alexandria, Va: Water Pollution Control Federation, 1990.

MLA (8e ed.) Bronvermelding

Não informado. Research Journal of the Water Pollution Control Federation. Water Pollution Control Federation, 1990.

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