Parmley, R. O. (2001). Hydraulics field manual. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Parmley, Robert O. Hydraulics Field Manual. McGraw-Hill, 2001.
Lua MLA (8ú heag.)Parmley, Robert O. Hydraulics Field Manual. McGraw-Hill, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.