Bell, S. (1993). Elements of visual design in the landscape. Spon Press.
Lua i Stíl Chicago (17ú heag.)Bell, Simon. Elements of Visual Design in the Landscape. London: Spon Press, 1993.
Lua MLA (9ú heag.)Bell, Simon. Elements of Visual Design in the Landscape. Spon Press, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.