Weston, J. (1997). Planning and enviromental impact assessment in practice. Longman.
Lua i Stíl Chicago (17ú heag.)Weston, Joe. Planning and Enviromental Impact Assessment in Practice. London: Longman, 1997.
Lua MLA (9ú heag.)Weston, Joe. Planning and Enviromental Impact Assessment in Practice. Longman, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.