APA (7e ed.) Bronvermelding

Não informado. (1969). Man-environment Systems. Association for the Study of Man-Environment Relations.

Chicago (17e ed.) Bronvermelding

Não informado. Man-environment Systems. Orange, NJ: Association for the Study of Man-Environment Relations, 1969.

MLA (8e ed.) Bronvermelding

Não informado. Man-environment Systems. Association for the Study of Man-Environment Relations, 1969.

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