APA (7e ed.) Bronvermelding

Não informado. (1973). Environmental comment. Urban Land Institute, Research Division.

Chicago (17e ed.) Bronvermelding

Não informado. Environmental Comment. Washington: Urban Land Institute, Research Division, 1973.

MLA (8e ed.) Bronvermelding

Não informado. Environmental Comment. Urban Land Institute, Research Division, 1973.

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