Não informado. (1983). Geotechnical and Geological Engineering. Chapman and Hall.
Lua i Stíl Chicago (17ú heag.)Não informado. Geotechnical and Geological Engineering. London: Chapman and Hall, 1983.
Lua MLA (8ú heag.)Não informado. Geotechnical and Geological Engineering. Chapman and Hall, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.