Tidswell, W. V. (1976). Pattern and process in human geography. University Tutorial Press.
Lua i Stíl Chicago (17ú heag.)Tidswell, William Vincent. Pattern and Process in Human Geography. London: University Tutorial Press, 1976.
Lua MLA (8ú heag.)Tidswell, William Vincent. Pattern and Process in Human Geography. University Tutorial Press, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.