Lua APA (7ú heag.)
Norbury, D. (2010). Soil and rock description in engineering practice. Whittles Pub. ; CRC Press.
Lua i Stíl Chicago (17ú heag.)
Norbury, David. Soil and Rock Description in Engineering Practice. Dunbeath, Scotland : Boca Raton, Fla.: Whittles Pub. ; CRC Press, 2010.
Lua MLA (9ú heag.)
Norbury, David. Soil and Rock Description in Engineering Practice. Whittles Pub. ; CRC Press, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.