Pugh, C. D. J. (1996). Sustainability, the environment and urbanization. Earthscan.
Citazione stile Chigago Style (17a edizione)Pugh, Cedric D. J. Sustainability, the Environment and Urbanization. London: Earthscan, 1996.
Citatione MLA (8a ed.)Pugh, Cedric D. J. Sustainability, the Environment and Urbanization. Earthscan, 1996.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.