Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.