Society for Long Range Planning\nEuropean Planning Federation. (1968). Long Range Planning. Pergamon Press.
Lua i Stíl Chicago (17ú heag.)Society for Long Range Planning\nEuropean Planning Federation. Long Range Planning. London: Pergamon Press, 1968.
Lua MLA (8ú heag.)Society for Long Range Planning\nEuropean Planning Federation. Long Range Planning. Pergamon Press, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.