MONTGOMERY, C. W. (2011). Environmental geology. McGraw-Hill Book Company.
Lua i Stíl Chicago (17ú heag.)MONTGOMERY, Carla W. Environmental Geology. McGraw-Hill Book Company, 2011.
Lua MLA (9ú heag.)MONTGOMERY, Carla W. Environmental Geology. McGraw-Hill Book Company, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.