Fetter, C. (1988). Applied hydrogeology (2nd ed.). Merrill Publishing.
Lua i Stíl Chicago (17ú heag.)Fetter, C.W. Applied Hydrogeology. 2nd ed. London: Merrill Publishing, 1988.
Lua MLA (9ú heag.)Fetter, C.W. Applied Hydrogeology. 2nd ed. Merrill Publishing, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.