Gilbert, A. (1976). Development planning and spatial structure. Wiley.
Lua i Stíl Chicago (17ú heag.)Gilbert, Alan. Development Planning and Spatial Structure. London: Wiley, 1976.
Lua MLA (9ú heag.)Gilbert, Alan. Development Planning and Spatial Structure. Wiley, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.