Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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