Webber, M. J. (1972). Impact of uncertainty on location. M.I.T. Press.
Lua i Stíl Chicago (17ú heag.)Webber, Michael John. Impact of Uncertainty on Location. Cambridge, Mass: M.I.T. Press, 1972.
Lua MLA (9ú heag.)Webber, Michael John. Impact of Uncertainty on Location. M.I.T. Press, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.