Hough, M. (2004). Cities and natural process: A basis for sustainability (2nd ed.). Routledge.
Lua i Stíl Chicago (17ú heag.)Hough, Michael. Cities and Natural Process: A Basis for Sustainability. 2nd ed. London ; New York: Routledge, 2004.
Lua MLA (9ú heag.)Hough, Michael. Cities and Natural Process: A Basis for Sustainability. 2nd ed. Routledge, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.