APA (7e ed.) Bronvermelding

Não informado. (1970). Air and water news. Air and Water News.

Chicago (17e ed.) Bronvermelding

Não informado. Air and Water News. New York: Air and Water News, 1970.

MLA (8e ed.) Bronvermelding

Não informado. Air and Water News. Air and Water News, 1970.

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