APA (7e ed.) Bronvermelding

Pugh, C. D. J. (1996). Sustainability, the environment and urbanization. Earthscan.

Chicago (17e ed.) Bronvermelding

Pugh, Cedric D. J. Sustainability, the Environment and Urbanization. London: Earthscan, 1996.

MLA (8e ed.) Bronvermelding

Pugh, Cedric D. J. Sustainability, the Environment and Urbanization. Earthscan, 1996.

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