APA aipamena

(1996).  Sustainability, the environment and urbanization.  Earthscan.

Chicago Style aipamena

 Sustainability, the Environment and Urbanization.  Earthscan, 1996.

MLA aipamena

 Sustainability, the Environment and Urbanization.  Earthscan, 1996.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.