APA (7e ed.) Bronvermelding

Não informado. (1983). Environment and Planning. Pion.

Chicago (17e ed.) Bronvermelding

Não informado. Environment and Planning. London: Pion, 1983.

MLA (8e ed.) Bronvermelding

Não informado. Environment and Planning. Pion, 1983.

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