Fetter, C. W. (1990). Applied hydrogeology (2nd ed.). CBS Publishers & Distributors.
Lua i Stíl Chicago (17ú heag.)Fetter, C. W. Applied Hydrogeology. 2nd ed. Delhi: CBS Publishers & Distributors, 1990.
Lua MLA (9ú heag.)Fetter, C. W. Applied Hydrogeology. 2nd ed. CBS Publishers & Distributors, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.