Chorley, R. J. (1972). Spatial analysis in geomorphology. Methuen.
Lua i Stíl Chicago (17ú heag.)Chorley, Richard J. Spatial Analysis in Geomorphology. London: Methuen, 1972.
Lua MLA (9ú heag.)Chorley, Richard J. Spatial Analysis in Geomorphology. Methuen, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.