APA (7e ed.) Bronvermelding

Não informado. (1976). Water quality bulletin. World Health Organization, Collaborating Centre on Surface and Ground Water.

Chicago (17e ed.) Bronvermelding

Não informado. Water Quality Bulletin. Ontario, Canada: World Health Organization, Collaborating Centre on Surface and Ground Water, 1976.

MLA (8e ed.) Bronvermelding

Não informado. Water Quality Bulletin. World Health Organization, Collaborating Centre on Surface and Ground Water, 1976.

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